To be honest, people tend to drink more these day(possibly more, maybe not) as younger people tend to do less varied things. In our whole time at uni we had one xmas meal that was almost dinner party style, in the way your parents have people over to eat good food and talk and enjoy the evening. Even then we went out to the uni club after. Butmostly everyone my age, a little above and below, they just go to the pub and then clubs and the odd cinema outing and sometimes take in a meal but almost exclusively before going out to pub/club. Frankly the banter is the same every single evening, with mostly the same people, then when you meet new people or groups you see less often its the same catching up banter about the same parties you all went to anyway. Yes it can be interesting but at some point because we all do the same damn thing all day and work, and the same damn thing to unwind every weekend its not unwinding anymore, without the drink its just the same night every single week.
I think the poster who mentioned losing control is semi right there, we all lead such mundane work lives these days that letting go is harder to do and alcohol makes it easier.
But most different groups of friends I'm in its essentially one of 2 things every night out, no proper meals, evenings in, no fancy meals out without getting drunk after, I dunno. People in general seem to do so little thats original anymore. I get smashed, or used to when i went out a lot as I'd be bored silly if not, same conversation 15 times with various people on the same night. Its like no one seems to have an original or different idea on what to do, so everyone just ends up at the socially exceptable dive of a club with music they don't really like so everyone gets smashed to enjoy it.
I mean, we've gone to a blues bar in london a couple of times, but due to the 20000 identical pubs and clubs the blues bar is tiny because very few people try something different, so it ends up crowded, very very hot and a little unpleasant. There, to me at least, seems to be so little difference between pubs, clubs, because everyones so damn scared of telling others they like other kinds of music, or different from the norm so everythings so damn generic and boring. I'd go to a jazz club, but its hard to find many/any now and the normal groups of people just wouldn't go. People are also so unwilling to try something new assuming they won't like it so they again just follow the generic safe path of trying to be as similar to the next person as possible so as not to stick out.