maybe ride both?

I commuted mostly on my (recently stolen ) MTB but still took my road bike occasionally, especially on days when I had to get somewhere in a hurry or was taking a long way in/home. They're both great for different reasons.

Personally, I figure that since the roads I ride to work are similar to the roads I ride for fun, if I wear out parts on my bikes replacing them is money well spent and a lot cheaper than the gas to drive in the long run...

Anne