I have zero moral issue with the state killing people who have been found guilty of a serious crime. However, I am 100% opposed to the death penalty. Here are my reasons:
First, it is more expensive to kill someone than to lock them up for life without hope of parole. These maggots should have the minimum amount of money spent on their miserable lives as possible.
Second, the constant appeals process by those opposed to the death penalty (which is a cottage industry in and of itself) makes the family re-live the horror of the crime. Putting someone away for life with no hope of parole limits the appeals.
Third, we humans are not perfect. Yet the death penalty is a perfect solution in the sense it cannot be revoked. There have been enough cases where people have been put to death or were on death row for crimes they did not commit to make me oppose the death penalty.
Fourth, it has not proven to be a deterrent. Why go to the trouble and expense of killing someone if it doesn't work?
Fifth, the death penalty is not punitive enough. There is one of two possibilities: a) there is a Hell; or b) there isn't. If there is, making someone's life Hell on earth for 30-70 years doesn't take much a chunk out of eternity. If there isn't, then you have relieved their suffering, thereby doing them a favor. Let them suffer on earth for a few years before they're sent on their way.
Put them away for life without hope of parole, and whatever happens to them in prison, happens. People who are serving life for violent offenses shouldn't be mixed with anyone else without those characteristics. No TV, no weights, no time outside and food enough for sustenance. Put a photo in their cell of their victim, so they never forget. If life is so cheap to them, let them live in a society made up of only those people. If they are raped or killed while in this kind of micro-society, it was their choice.