I have a question: since you are so attached to having the death penalty, would you have balls to personally push the button?
If the convict in question harmed me personally by killing a member of my family, I would push that damn button in a heartbeat. And he should be thanking his lucky stars that I let the law take its course as opposed to taking it in my own hands.
But that's just me.
Now back to my less emotional, and more rational side:
Since the death penalty is more expensive than feeding and housing a prisoner for a life sentence, any Republican or Libertarian who supports the death penalty is a hypocrite.
That would be a major reason why I would acquiesce in its repeal, if you look at it in a purely cost-benefit-analysis standpoint.
Of course that, and the fact that our criminal justice system has its imperfections, particularly for those of less economic means, which results in suspects being convicted of crimes they did not commit, which sometimes results in innocents being executed.