[auganov]

Born in one of the highest consumption countries way above the US. My dad never drank, I never drank, hardly ever seen my mom or grandparents drink (though they're not strictly against it).

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.