I know that in certain countries like Japan or South Korea: it’s normal to leave the front door unlocked since the probaility of someone breaking in is low since their crime rate isn’t high. I knew a friend of mine who resides in Korea where they even left the car unlocked with the keys inside, can you do either of those things in America?
In my parent’s area, where it’s like 40 people per square mile, yeah it’s perfectly safe. It’s a hard mindset to get out of for me, I live in metro Detroit now. My neighborhood is nice, low crime. Good school district. We leave our house unlocked for short periods, like going g to pick up our kid from daycare or taking a walk to the park. Sometimes it gets left unlocked accidentally overnight. Nothing has ever happened.
I also am in the habit of never locking my car. There’s nothing in it, except my daughter’s carseat and some quarters for the Aldi carts. Only once has anything been taken, and that was in a mall parking lot. They stole two throw pillows, and a warm coat. I can only assume it was a homeless person, so I’m not even mad. At least with unlocked doors I don’t worry about my windows being broken.