The Zen of Drinking Alone from Modern Drunkard Magazine:
http://www.moderndrunkardmagazine.co...king_alone.htm
Drinking alone is perfectly acceptable. Though in college I rarely had the need to do that since there were always a lot of people looking to drink. So drinking alone might be seen as more anti-social than it is a sign of depression or something. Nowadays I'll often have a couple beers after work or something stronger for a nightcap.