Former teetotaler reporting in. I never had a drink until I was 23 (I’m 27), and found drunk people to generally to be completely irritating. Because I associated drinking with people acting like idiots, I avoided it for a lot longer than I would have without those associations.
I finally started drinking wine with my girlfriend. It was fun – lowered inhibitions lead to lots of good, playful things. I now drink socially, and every once in a while get flat-out drunk. It’s a lot of fun. I’ve only been sick once or twice – I usually stop when I’m tipsy and silly and have no ill effects the next day (drinking lots of water all night is a very very good idea.)
I’ve certainly gotten rowdy and obnoxious, I’m sure, but I’m OK with that. It’s been a positive experience and I’m really glad I didn’t abstain forever, based on the negative actions of other people. I’m also really glad I started when I wanted to, for my own reasons.
My advice: there’s nothing wrong with not drinking. But, if you take it slowly, I think it’s definitely worth a try. (It helps if you’re with the right group of friends, who will respect your pace and who you can act silly with.) And for some reason, telling embarrassing drunken stories is fascinating for some reason. I have no idea why.