Believe me, lifting is my life. Five times a week, 90+ minutes a day. I follow a strict healthy diet, 24/7. I am 6.5% bodyfat. I despise those who go out and drink 5 nights a week. It's pathetic to say the least. They drink every night, eat like crap all day, sleep late, everything lifters like us would never do. But, that does not mean we can't take one day out of 6 or so weeks to do that ourselves. It will not harm a single thing. It won't harm our health, gains, etc. As a matter of fact, it could be somewhat beneficial. Shock our bodies, fix a plateau by doing something you never do and spiking your calories with junk food, you name it.
If you don't want to drink, and are fine with it, and you are having fun, then more power to you man. There is asbolutely no problem with that, and I find that awesome. If you don't do it because you feel it will hinder whatever you are doing, and you are not having fun, then go out and have some beers. I don't think it's the ladder though.
Put it this way: I ended a cycle last year right before summer started, jacked and shredded. I still followed my diet and workout routine, but once or twice on the weekends I would drink, eat, and have fun all day. Did this for over 7 straight months and I looked exactly the same. Exactly. I gained a few pounds of fat, but hardly any, and by the time the fat was coming on a bit, it was already mid-winter and I was wearing sweatshirts and needed some protection from the cold anyway. After 7 months I got up to 12.5% bodyfat. That is still low and healthy as hell. I already planned to cut down hardcore again right before spring started and keep it going again. Now I am down to 6.5% bodyfat. As long as you have a planned schedule, do things in moderation, and use common sense, you can do these things and stay healthy and look good year-round.
Also, don't think that I am the type that "can't gain fat easily". I used to be 320lbs. This shows that drinking and eating in moderation once you reach your goal, while still following a strict diet and workout routine the rest of the time is perfectly fine and safe. There is nothing wrong with it.
Lifters use the "alcohol ruins gains" thing the same way Fox News uses the "steroids kill people" thing. It is all over-exaggerated, and they are all safe if used in moderation.