Naturally, I don't believe in capital punishment, but it seems to me their lethal injection procedure is too complicated for its own good. A massive opiate overdose (which could be delivered subQ or IM) would initially be euphoric, the person would fall asleep, stop breathing and then die of asphyxiation. There are caveats, of course (like they might not actually die and just end up severely brain-damaged from lack of oxygen), but these could be sorted with an additional injection of something more directly lethal once they were unconscious.

When it comes down to it, though, there really isn't a "humane" way to kill someone. Perhaps more or less "humane" ways, but it's still well down the "humane" spectrum.

Anyways, capital punishment seems to be more about vengeance than justice or problem solving. Also, given that it's not possible to undo, and the embarrassingly large number of cases overturned by DNA evidence as of late, it's just not worth it. People that truly are irredeemable psychopaths should just be given a lifetime sentence with no chance of parole. This wouldn't be a problem if they would stop incarcerating drug users for stupid-long periods of time. Prison should be for people incapable of living in society without causing harm to others. That's a case of mental illness, and should be treated as such.

Privatized prisons wouldn't like that, but if you eliminated all the incarcerated people who could be redeemable with the right treatment, we could direct our resources to maintaining and attempting to treat the truly criminally insane.

Bit of a rant, but the system seems to be broken and getting more broken all the time.