I drink a fair bit - probably three or four pints two or three times a week. That's between 12 and 24 units - which is probably not terribly good for me. I enjoy it though, and it doesn't affect me to the degree that anyone comments about it, or that I feel ill. Everybody else I'm around tends to be drinking similarly, so its hard to tell if I'm slipping into a pit of vice in absolute terms or not.
Pubs tend to be a place to meet friends and talk, and beers tend to get drunk. I don't like being drunk very much, but I do like the cool, refreshing taste of beer after a hard day in the office. I refuse to drink by myself though - not because I think people who drink by themselves are bad, but just because I think that might be a slipperly slope for me personally. If I limit myself to social occasions and only binge once in a blew mune, then I think I can't go THAT wrong. I hope.