Thanks for the links. I started biking to work 2+ months ago, motivated mostly by frugalness. But the greatest rewards, it had turned out, are feeling refreshed and energetic and the fact that biking to NF from work is actually FUN. On Sunday night, I actually feel a bit giddy thinking, "I can't wait to ride my bike tomorrow!"
This is coming from a guy in his mid-40's who rode his bike all through youth, and into college, and then hardly rode at all for the next two decades.