Clearly the prison system is way too soft on the inmates.
Were the prison system like that of say 18th century France, or some muslin country, they would be just about empty in just a matter of years.
Heck, just go back to the kinds of prisons we had in the first half or the 20th century - before the looney-libs got all mooshy-gushy about condition. The Sheriff Araipo model works.