I've stayed at home for the first two years of uni, and I've never really felt that I've missed out on much. I've never really been that bothered about going out and getting drunk or going clubbing all the time, and I don't reckon I would do it that often even if I stayed in Glasgow.
I've still managed to find a close group of friends, and I am still able to go to the pub or the union with them, or go the odd night out to a comedy club or whatever, which to me is a much more enjoyable evening than going and getting blitzed.
The main reason I went to uni was to get a degree so that I could get a good job, so I'd rather do it straight after school than waste a couple of years earning a lot less than I could get when I get through my course. Obviously having a social life makes it more enjoyable, but that shouldn't be your main reason for going to uni.