Youch! I know tons and tons of sober alcoholics (my DH, my best friend, .... and a zillion other people)! It's called recovery - alcoholism is a disease, and doesn't just go away. There are active alcoholics, and there are recovering alcoholics.

(steps down off soapbox and apologizes for ranting)

The same assumptions about bikers go around here, too, as well as people riding scooters. It couldn't possibly just be about exercise, fresh air, and being environmentally & fiscally responsible.