Maybe it is because time keeping devices are more readily available than pedometers? You can always count the number of steps you take in X amount of time and multiply to determine your rate. I like to walk too. Once I found the miles for one walk it was easy to determine my pace and then time is much easier to track then miles when you take different routes.
AMYELI 12/15/04 4:02 P
I think it'd be nice to have the option of counting miles walked rather than minutes at a given rate. If you know the distance for the route you normally go, that would be an easier way to enter it than trying to back-calculate and keep track of time.