It's better for my body: I get more exercise, get outside, am more awake when I get to work, and have a good sweat going when I get back home.

It's better for my mind: Going a bit slower on a bike vs. a car allows you to take in more of your environment. Just being outside exposes you to the elements so that I am aware of being a PART of my environment, not insulated from it. The steady cadence of pedaling and not listening to the car stereo gets my mind working and actually thinking instead of just being entertained. I'm happier and less stressed when I ride my bike.

It's FUN! Speeding around, dodging cars, and being more maneuverable is a blast. The freedom of being on a bike just enhances the experience of riding.

It saves money: About $150/month over driving my Honda Civic. I sold it and now I have a great new bike AND an additional $6k in the bank.

It is better for the environment: A bike doesn't consume fossil fuels, electricity, or emit harmful pollutants. One person riding a few miles a day won't make a huge impact on pollution or fuel consumption, but 20 million would!