A few reasons to not pass out:
As teens, my friends and I used to sometimes play tricks on anyone who passed out. One friend, who was pretty big, and quick to fight when drinking, passed out and got the drag queen treatment (eye shadow, blush, etc.). When he finally woke up we all went on another beer run. It was hilarious in the store - people staring at him, and he was being all belligerent and tough... "what the fuck are you looking at"... (this was in the 80s, we had spiky, colored hair, so people staring wasn't unusual - he didn't figure it out until after the beer run.)