I agree with it.
You can't really compare someone planning and executing a heinous crime to the process leading to the death penalty. They spend years investigating and preparing evidence, put the person in front of a jury of their peers, give the accused the opportunity to defend themselves, and in most cases pay for the person to have a lawyer. Hardly the same as breaking into someone's house and stabbing them in their sleep.
I think it's a slap in the face to the person who was murdered and their families to punish a cold-blooded killer by giving them a warm bed to sleep in, guaranteed meals, clothing, exercise equipment, access to television and the internet, a college education, and health care at the expense of the taxpayer. I'm not saying jail is a picnic, I'm saying that the punishment absolutely does not fit the crime in those cases.
The ones on death row who say they shouldn't be put to death because killing is wrong astound me. If you truly believed killing was wrong, you wouldn't be here in the first place. They think that the rules don't apply to them and that the only life that matters is there own.
That said, the death penalty isn't appropriate in all murder cases. If you are mentally disabled or a minor, it shouldn't be an option. I'm on the fence about crimes of passion, but I think it's perfectly acceptable in premeditated and heinous crimes. These people know that murder can lead to the death penalty. They chose to risk it. The blame is on them.