I don't drink. Things that taste like alcohol are vile, while things that don't taste like alcohol taste like fruit juice, or coffee, or vanilla or chocolate milk, and I can have more of these things if there isn't the risk of getting drunk, or the financially debilitating expense involved, so why bother at all? In addition to this, I know how I behave towards things that I like, so there's a high likelihood of being unable to ever stop if I started.
Curiously enough, though, I don't mind other people who are drunk around me, and at parties I generally end up laughing and having a good time in the presence of the most intoxicated person in the room, and furthermore, I end up euphoric and involuntarily mimicking their behavior without having consumed anything myself. I don't quite understand why this is.