Two things:

1. I love to eat. I exercise so I can eat, not the other way around.

2. I'm the family nut. There's always someone on the fringe in any family and that's always been me. My outdoor activities have always been a source of wonder to them. (rock climbing, telemark skiing, backpacking, now triathlons) I just can't let them down and I can't let one of the young 'uns take my place.