Why should taxpayers pay for criminals to sit in cells all day and do nothing? Why should we pay for amenities like television, arts, crafts or a library? In fact, why should we even pay for them to be there at all?
From my perspective, criminals aren't afraid to go to prison because they know they can still be just as lazy as they were in the real world. Why not make them work on farms or other manual labor to pay for themselves in prison? After all, it was their decision to take that path that would invariably lead to prison.