When I came back to Europe I tried drinking a few times, but I didn't really like it. As I hadn't been drinking, even one beer would make me feel so bad and dehydrated the next day (certain non-alcoholic beers do the same, so I don't think it is necessarily the alcohol). My wife was in the same situation, and then got pregnant so she also wasn't drinking. In the end I drifted away from my old friends who I would drink with, and made new friends who were happy to do things other than drinking.
Admittedly it does make certain social situations a bit awkward (my co-working space has a weekly beer night, although I'm usually not the only one who doesn't drink), but overall I don't miss drinking. Looking back the only reason I drank before was due to peer pressure; I never felt having a cold beer after work was a very effective relaxation technique.
I don’t have a specific reason for it. The one reason most people seem to accept is when I say “I don’t like the feeling of losing control”, although that’s only partially it. Another one that comes up is “I don’t need that to have fun”. Although I grew up in France and Belgium, I don’t like the taste of either wine or beer.
I completely agree with OP though: I don’t frankly care when people judge me for not drinking.
I'm in a bubble.
I assume drinkers just tend to go to places where people drink like pubs, clubs which I've never been to. I'm sure non-drinkers tend to be rare there.
Also assuming that drinking might correlate with sociability there could be a friendship paradox style thing going on where people you know are much more likely to be drinkers.
Sorry about that.