-It is fun.
-It pollutes less
-It is faster
-good exercise as opposed to sitting in a car
the fifth reason I bicycle commute is to help me be a little more humble.
On a bicycle in Arusha I am a lower class citizen and seemingly with less road rights than if I was in a vehicle, even if I was in public transport. I don't always appreciate it but it is good for me , keeps things in perspective.