Legend said
Since always. It keeps them from doing more wrong, and once they have served the equivalence of their crimes, they are released. A punishment is necessary, but one should never steal. There is authority for a reason, and it's meant to keep those who would do wrong in check. Not that I'm a fan of those in charge or anything.
I could equally argue that decapitation of all criminals will prevent them doing wrong, and therefore is right. Capitol punishment should therefore return?