When you put more bad guys in jail, then the good guys have to spend more in taxes to pay for their wharhousing, feeding, and security. When the good guys have to pay more taxes there is less of everything good to go around, resulting in circumstances that produce more bad guys. It is a slippery slope than leads to an authortrian police state, when lawmakers seek to solve all of societys ills by locking people up in cages.
What percentage of the population would you like to have in prison ?