It was purely succumbing to peer pressure. Not something I'm particularly proud of, nor something I would recommend. If you don't like alcohol, and you don't feel like that's holding you back socially, then by all means don't drink. If you don't feel like you're missing out on anything, then you aren't. That's my whole point: you should ignore what other people think and just decide for yourself what you like, even if (maybe especially if) what you like is not to start drinking in the first place.