Here in Michigan right after winter the roads are usually so bad, i'd almost rather ride on gravel, sure beats the rim bending, fender denting pot holes we get around here. I'd almost rather ride over an open manhole than some of our "paved" roads.
In the belt and you buy a new belt and pully set up. and if you can't do the work yourself you will go for a ride alright. but for me I will stick to a chain, sometimes peace and quiet can only be found at the end of a gravel road.