I don't. I got drunk a few times in college, and have had a couple beers once or twice, and had a half or a pint when I'm in a pub in the UK just to be sociable, but I never want any more, and alcohol doesn't tasted good and has no attraction to me.
One of my sons is just like me. The other knows that he is a potential alcoholic. He drank some in college and in the military, and it started to get hold of him, and he quit and is a teetotaler now, because he knows that if he starts he might not be able to quit.
Some folks are not born with the predisposition, and they can drink and have a good time and quit and wake up normally and don't drink under stress. Some cannot - once they get that feeling, they HAVE to have it and they go downhill from there.
I don't quite understand why we are so accepting of it when we know how many people it can kill and how many families it can ruin ... FAR more than any other diseases we might get. Playing with fire, it is, but we're not going to stop it now.