This post hits home for me primarily because I had always prided myself on not drinking and smoking for most of my life. I'm not a total perfectionist or anything, but the problem is that having this sort of attitude towards these activities is difficult when most of the world around you does not view it that way. I had to sort of face this, unfortunately.
Sure, there will always be people who aren't into drinking or smoking as well, and if you find those, then great, you've lucked out, but believe me, it's not easy to find, and you do need a bit of luck. I know a lot of friends that drink almost excessively, and as understanding as they are (they don't push me too hard), you'll still get those who just have a hard time understanding why you don't. Smoking is much easier to not get as much slack about though, but drinking is just something that everyone seems to do to some extent. I will normally drink, but I don't do it excessively because it makes me sleepy.
Anyways, not to go too far on a tangent, but the last girl I dated sort of saw me in the same light as you. She was not into drinking for a long time, but she eventually accepted it and now she will drink, but won't go totally overboard with it. Regardless, I think that for women, drinking is almost universal, because they're all insecure, and inhibited, and alcohol loosens that more so than men. If you don't drink, I feel there is some disadvantage only because there's the danger of being the guy that stands for the woman's conscience, and that can be something that she doesn't like to feel. Just food for thought, and I learned this the hard way, so believe me, this isn't keyboard jockeying.