I think the Death Penalty should be used in cases of multiple murders or murders of people under the age of 15, otherwise life imprisonment. For other crimes such as rape, I believe the perpetrator, if proven guilty beyond a shadow of a doubt should be physically altered so they cannot achieve an erection, and also should have a forced vasectomy.
Edit: Of course rape isn't just a guy thing.. Don't know what the punishment should be for women.
Should we cut off the hands of people that steal as well, you all seem to keep forgetting these are still human beings. Beyond that our justice system is still very much imperfect and we should stay away from any irreversible punishments such as the death penalty or castration for more than just moral reasons ,but because you never know 100% that someone is guilty. We should always allow people no matter the crime to redeem themselves or prove themselves innocent.
Stealing is a little bit different than Rape... And as far as I'm concerned, someone who rapes someone else is far below a human being in my eyes. And like I said, only should be done if proven beyond a shadow of a doubt. Meaning where it is absolutely incontrovertible that this happened (witnesses, DNA, a confession even). If it cannot be proven with no reasonable suspicion on the contrary, these punishments should be put into motion.
Liam's right, you know how hard it is to prove something 100%, it just doesn't happen, and even then, would we be any better mutilating a criminal for a crime, then the actual crime itself. I would hope we would take the higher road in that situation.