I must agree with the above post. It's when the alcohol becomes greater than the life that the trouble begins.

I'm not sure where that line is, but I know I've seen it. It's easy to find if you look hard enough. Problem is, once you find the line you have to look just as hard, if not harder, in the other direction to be able to walk away from it.

Some are more willing and able to do that than others, I suppose.