When the saying, "an eye for an eye" was made, I don't think it was supposed to include death. I do support the Death Penalty, by all means, but not because there's no room in jail. That's just stupid. Because there's no room in jail, you're just going to stick someone on a chair and fry them to death when they didn't commit that serious of a crime? If you murder someone, you're left with that hanging over your head. Really, I think they're going to kill themselves emotionally without anyone needing to do something. Unless they're psycopaths, but like Went said, you don't come across a lot of them IRL. If it was an intentional murder, then by all means I believe they should suffer for that. However, people murder others accidentally. Do you think they should be put on the chair or hanged? It's still murder, but it wasn't intentional. Someone answer me that.
Also, I don't like this whole "it costs more to..." Why? Because that's like putting money on someone elses life.