Pay off debts, secure a home paid off in full for my family with enough land that we can grow our own food, get new bike, and roam the world surreptitiously helping people.

Step one, get an accountant, and lawyer. Things will get complex, and mistakes can result in spending more than you have which isn’t the goal. Thus an accountant to watch those numbers and keep me in the black. The big issue is taxes need to be paid so there needs to be enough left over to do that along with pay the accountant, but there will also be weird legal issues that come up.

Second, the money goes to charity. How it gets there will be tricky though.

The IRS looks at large donations and starts to assume I’m trying to dodge taxes by hiring a charity for something I’d do anyway - so my accountant will work with them to figure out what donation levels work for each that I care about. There are also some causes that I consider charity that do not meet the legal definition (often because they are political) and so the donation to them is still taxable (not that I’m trying to dodge taxes, but I’ll take advantage of anything that will help causes I care about)

I will set aside some money as a fund for me. However I’ll only allow myself to withdraw from it as payment for work done for charity. projects like KDE or FreeBSD can always use more help. There is a summer camp I’ll volunteer for once in a while. Habitat for Humanity needs help… The important part is I need to put in 35 hours a week or I don’t get money from the fund (I will allow 2 months of vacation and that summer camp will get 80 hours/week when in session which I will bank for more vacation). The important part here is I need to stay busy - doctors tell me sitting around doing nothing when you retire is deadly so I’m not going to do that.

Likely a lot of money will remain after I’m dead, so a trust fund will remain. However the instructions will be to drain the money as fast as possible. I know of several funds remaining from people who died 100+ years ago and the fund is now doing things I’m sure the original would oppose.

Buy a few representatives

1. Pay off the remainder on my mortgage.
2. Pay off my parents’ mortgage.
3. Buy a new house that is large enough for my family to live comfortably in, without being ostentatious.
4. Give my old home to my in-laws. They could use it.
5. Set up a fund that produces enough interest for me and my family to live off of in perpetuity. $4 million in an account that produces 5.5% interest annually would be $220,000 (pre-tax) every year, which is plenty for our needs.
6. Set up a foundation to help the poor, fund environmental projects, support social justice causes, and so on with all of the rest.

I do not need $6 billion. No one does. I don’t want it. It would ruin me. The absolute best thing I could do with it is dedicate the overwhelming majority of it to causes I believe in, rather than hoarding it or buying a bunch of stupid shit.

Establish a trust dedicated to effectively and efficiently using the funds to advance my goals.

What are my goals? They’re centered around public health, housing, the environment, equality and justice.

Feels like wishful thinking, but then, so does winning 5 billion GBP…

Obviously I’m gonna work out how much to set aside to live comfortably off the interest forever first. That should not require a big percentage of that much money. Get myself a house, make sure my loved ones are set and comfortable too.

Next I’m going to set aside a chunk of it to be completely irresponsible with. I’m gonna get on a train and see all the bits of Europe I want to see, stay in nice hotels, eat in fancy restaurants, and bring my friends and family along to various bits of it. There are a few things like videogames I would like to see developed but do not have the skills to make myself, so I’ll throw a few tens of millions at those ideas. If they work out, awesome, they might even pay for themselves. I’ve always liked vehicle design so I will get a car coachbuilt. Not something flashy and loud, just something exactly how I decide it should be. A bunch of custom-built guitars.

So with needs and vices taken care of, and I cannot imagine I have even come close to getting through the first of five billions yet, it’s time to actually try to do some good. I have a strong casual interest in history, so I think I’d enjoy funding work to be done by local institutions in places that are currently relatively under-explored. Ask universities in these places what they want, ask nothing in return other than that someone shows me whatever cool stuff they’ve learned every so often. You want to take the time to laser-scan a bunch of ancient buildings like the Zamani project is doing? Hell yeah, I’ll pay everyone’s wages for that. My thinking here is that if I’m not directing it I’m unlikely to unintentionally fuck something up through ignorance, and by paying for skilled work that is not extracting anything physical I am hopefully giving the local economies a boost in a way that should not result in me undercutting any local industries or anything

Yeah, I’m building at least one city from scratch. The big thing is going to be figuring out where.

I’ve got a nearby city that’s been exploding in popularity. Creating my own suburb nearish to that should be sustainable, and reduce the inflation of COL.

I’d become a sponsor of the Trillion Tree Project to help mitigate the effects of climate change.

I’d organize a group to help clean up the Great Pacific Garbage Patch, and probably find some way to reuse all that plastic, to reduce the amount of new plastic that needs to be created.

So after taxes about $4B?

Take 500 million out for me, start a business and do all the stuff we want to.

If possible: Use the rest for a fund for perpetuity to fund transit all over my city, make the buses free and running every 15 minutes, and pay the drivers and all the other workers a really good wage.

If that’s impossible, I guess I have to run for governor, win, and Make Florida Freaky Again! Work for the good of our state. Is billions enough to do it?

Setup solar panels with 99% of it then probably die in an orgy of hedonism with the remaining 6 million.

Well, my “if I won the lottery” fantasy only requires a few million. One by one, I’d tell my mates to come check out my new place, which turns out to be a condo at Circuit of the Americas. While we’re overlooking my collection of mint-condition shitbox cars that have no reason to be preserved, I’d hand them a check for enough money to wipe out their debts and buy a house… along with a non-disclosure agreement.

Then I’d disappear for a while, taking a road trip around the country without any sort of financial or scheduling concerns. Just show up in a random city, spend a few weeks seeing all the sights at my own pace, then moving along whenever I feel like it.

Going from millions to billions, I doubt I’d deviate from that plan too much. Once I’ve got myself and my mates set for life, I guess I’d set the remaining 4.9 billion pounds aside for any impulse buys, like an F1 team or a couple hundred politicians.

Pay off my debt and fuck off some where nice and quite and live the rest of my days comfortably.

Buy the entire Supreme Court of the United States.

Dunno what I’d do with the other $6.415 billion though. Maybe start buying Congress members?

I may keep 1m, that’s way more than what I need to live this life and donate the rest to hospitals and education institutions.

Well, besides the obvious of paying off mortgages and debts which wouldn’t even amount to a fraction of that, I’d buy an island to convert into a 24/7 mass paintball (or laser tag or something) warzone experience, like hundreds of people on both sides.

Sell the experience to people, classic Red team vs blue team, stay until you’re eliminated, barracks/camps, HQ, command structures, etc. It would be a live streamed competition with commentary, tactics, live go pro cams, everything. Maybe do it in seasons, have leaderboards, MVPs, whatever.

Players that have already been to the island before would be able to advise, or place bets on their accounts or whatever to build up load outs for their next trip.

The goal being a fun live game, exercise, stamina training, whatever, but mostly an outlet for the people in the world that get excited by war with the intention of hopefully reducing that with a safe environment.

I feel like if done correctly, and made as affordable as possible, it could turn into a relatively profitable business. I would then ensure the profits went to charities that provide aid to actual warzones and ensure that the primary message of the theme park is completely anti-war.

Any money leftover that didn’t go into that project I would donate and invest in animal welfare and conservation, renewable energy, and tackling the climate crisis.