Capital Punishment a Moral Abomination?

Modern security? Most violent crimes are from repeat offenders who get out of overcrowded prisons on parole decisions. I can understand differences of opinion on capital punishment but to call capital punishment a moral abomination seems to me quite a reach. Who decides what is a moral abomination if not God and if God one must reconcile Genesis 9:6 with this. Also Jesus never condemned crucifixion. Quite interesting.