I don't know, I just cannot control my drinking.
When I eat, I eat to eat. I don't really enjoy my food, or savor the flavor.... I just shove it in my mouth and swallow. I get an abnormal amount of responses regarding my food intake. I'm very methodic in my eating, I'll eat one thing first, then the next, then the next. I usually save the best (meat) for last. Example: I'll eat all my fries, then all my burger. Or all my green beans, all my potato, then all my steak. I think I do it simply because I find eating and food as a task to be accomplished and that's the most efficient way of doing it.
The same is with alcohol... I have to consciously think about what I'm drinking otherwise I run away from myself. I have like a bottomless pit of a stomach so I drink beer after beer after beer, if someone offers me a shot I'll do it, yadda yadda.
Sorry for that likely unneeded mid-post wall of text.
[MENTION=16164]Wolfie[/MENTION] , I love being out of my mind. Probably another factor =/