I support the death penalty. If it's a very extreme case, and there's no doubt about whether or not the person did it, why wouldn't you want to take away that person's life? If someone raped, tortured, and killed like 20 people, you would let them live out their life in a prison? Sure that's a bit of an exaggeration. I don't think people should be killed for just one or maybe two murders, but for serial killers/rapists, people who are clearly mentally sick and have no morals and no hope to live anything like a normal life, why would you waste money and prison space to let them live out the rest of their lives?
And I might add that punishing people for crimes by killing them is perfectly natural. And also I do think it's ridiculous how people argue so much about which method is more humane than others. It's the 21st century, with all the chemicals we have we can't just knock someone unconcsious and stop their heart? In hospitals people are sedated all the time for surgeries and such, why can't prisons just do the same? And after they're unconcsious it doesn't really matter how they kill them. If they're not gonna feel it they could just let the victims or victims' family beat the shit out of the prisoner, though obviously things could be kept much simpler than that.