The death penalty is imposed so capriciously that it has no value as a deterrent. It is revenge only.
That's pretty much my sentiment, but I'm to the point now where I don't think I can give the death penalty that much credit since there's a percentage of completely innocent people on death row with the state showing no interest in getting it right. In this case everyone knew she wasn't the actual killer. So, it's just the state committing murder as a show of force, really. That's all the credit I'm willing to give the death penalty. The state commits murder as a show of force.