I actually started bike commuting because I got my first full-time job when I was 16, and I hadn't gotten my learner's permit. Where I live anyone under 18 has to hold a learner's permit for six months before getting a driver's license. I was/am poor anyway, so I couldn't really afford a car. So I got my Raleigh instead.

I never drink & drive (one beer before a ride on my bicycle doesn't seem to cause me any problems though). The only motor vehicle I have is a motorcycle and I wouldn't risk it.