Not everyone celebrates turning 21 by going to bars and drinking. A lot of people do but not everyone does. I didn't. I wasn't much of a drinker, I'm still not, it's never been a social thing in my life (well except for the time it was part of destructive social habits, but that was when I was in my mid 20s). My parents didn't drink in front of us, most of my family were Southern Baptists and so I never grew up around alcohol.

And I wasn't anticipating turning 21 so I could drink. Maybe get into a couple of bars but not drink. At this point (almost 20 years down the line) I can't even remember what I did when I turned 21.