Think where the beer will end? Will it end up in embarassment, calamity, slurring and general drunken idiot behaviour. That's OK if you're OK with that. But if not then it gets to be a real downer.
A beer for me would end up as a 3 day drink and drug bender. Likely destroying my life in that period in blackout. Potentially drink driving and killing myself or even worse still an innocent pedestrian.
No thanks, I'l just have a cold Coca-Cola instead. But then again I'm a messy, blackout alcoholic. If I wasn't then sure I could have that beer like all those other nice smiley people.