When I was 14-15, I was riding all over the place, reveling in the pure joy and freedom cycling gave me; it was a release that I'd never experienced in my younger years. After stupidly turning to cars, I tried repeatedly to recapture that feeling over the years that followed.

After I turned 40, a job circumstance put me in a position to pick up commuting and utility cycling again. I WAS able to get the passion back this time, and I've never looked back! I even sold my car!

(BTW, I voted the last reason on the poll list. The poll listed other good reasons, but they were all a distant 2nd.)