Lethal Injection- I think that the others, if not barbaric, are terribly antiquated.
Well, when you think about it, isn't lethal injection pretty barbaric? We take a person, strap him (or her) down on a table, insert needles in the person's veins, then push a button to begin a series of intravenous injections that render the person first unconscious, then dead.
Unless that person is somehow clueless as to what is occurring, I can't think of much that would be more terrifying. The fact that it may involve less physical pain does not mean it is humane in my book.
How about we set the condemned man up with a hooker, then hit him in the back of the head with a sledge hammer at the moment of release? If you are looking for a humane way to take a man's life, that's got to be near the top of any list.
Or, we could just accept that there is no humane way to take a life and warehouse the worst offenders somewhere until they die. Life in prison may be too good for some of the evil people out there, but then is it really supposed to be about retribution, or about making society safe from these predators? I'm inclined to believe that the latter is our goal (or should be) and that capital punishment does nothing but diminish us as a society.
Once we decide that allowing this or that person to live among us is too great a risk, what we do with that person says nothing about who he or she is, and everything about who we are as a society.