Oh, I'm for the death penalty philosophically, but against it in practice. Not being ironic--I have no ethical objections to execution for certain crimes. I just require complete certainty of guilt and total fairness in the judicial system first (no rich people getting off because they have money, etc). And as a realist, I don't think these prerequisites are going to be met.
I didn't mean to suggest an ethical objection to the death penalty was irrational or empty rhetoric, but merely that since I have an opposing ethical position that arguing from ethics wouldn't work.
Hence I have the satisfaction of a position that is simultaneously tough on criminals and enlightened and merciful.