The same way that it is illegal to drink and drive, Alcohol gives the illusion that you are better at judging situations when in fact that is far from correct, you make terrible decisions and in a car you could kill someone, in Poker you only want to kill yourself when you get beat.
Booze and Poker should never be mixed, it just leads to more mistakes, and Poker is won by players who make the fewest mistakes.
When the fun Stops, STOP!
(then have a drink)