I don't drink, and I find it a very useful way of detecting idiots. People who have a problem with me not drinking are not people I want to be around. And if I'm at some do where I have to be polite to people and the issue comes up I just tell them I'm a Buddhist (which is pretty accurate) and that usually shuts them up. Failing all that, I suppose you could always pour the drink over their head. Ought to stop them :-)