Baptists and their anti-drinking clause

Recently I was visting one of my fellow bloggers church web site. Its a Baptist Church and on its constitutions, it states this "To strive to abstain from the sale and use of intoxicating drinks as a beverage, tobacco, and illegal drugs." Thats good and all for an individual who makes that decision, but to impose that on all present and future parishioners, is rediculous. Where in the bible does it say not to drink alcohol? Actually from what I have read and seen, all they drink back there is alcohol, in form of wine, ect.. I don't think they had desani water back then. In fact, here is something that is really crazy, Christ himself drank, his first miracle was changing water into wine at the wedding in Cana. And also at the last supper, and many more countless times I am sure. Why abstain from Alcohol, is God himself drinks it? I can understand not getting drunk, but the principle of the matter is wack.