I use it literally everywhere out of habit, I got made fun of for using it when pulling out of my moms driveway once lol
The only reason I won’t possibly use it is when I’m in a turn only lane at a red light and don’t want to listen to it for 3 minutes
Most people I find only use it 75% of the time at best.
I’m 2.5 years into driving and am curious if it’s just what semi-new drivers do or if I’m the odd one out.
Ideally a good 10-20 seconds beforehand.
I use it as soon as it’s clear what it means. If there are multiple turns, that might be four seconds so that they don’t expect me to turn early. I’ll typically hit it in the middle of the intersection of the first turn.
If there’s no earlier option to turn, I’ll absolutely leave it on for 10-15 seconds.
Regarding switching lanes I prefer when other driver enable their signal a few seconds just before they do the maneuver. If they enable their blinker too early I don’t know when exactly they will switch lanes which is confusing IMHO.