Originally Posted by Litespeed
Try being about the oldest one at work and telling them that after work you did a 20 or 30 mile bike ride. I'm sure if they could they would have me committed

Totally agree w/ Litespeed (and others).
It's about trying to be fit in a rational way over a period of years, it's about being part of a small group of enthusiasts, it's about the freedom on a bike, it's about the simplicity of the machine and learning to master the machine. Plus, bikes are beautiful.
It can be different things for different people.