Only downside I can think of is sometimes feeling a tiny bit left out when others do things that revolve around drinking and I'm not invited. Yesterday, a bunch of my friends when on a little tour of local wineries - they rented a party bus and by all accounts, had a great time. Of course, I wasn't invited, which was perfectly fine as it held little interest for me, really, but at the same time, I had a few minutes of wishing I was along for the ride, if only for the social aspect of it. On the other hand, this morning I'm hearing that a couple of people got pretty drunk, and I would have been one of them if I were still drinking and had gone. Instead, I got a lot of things done around my house yesterday and I'm at work bright and early this morning, no hangover and no regrets.