On the contrary, for me it's *very much* about the humanity.
However, I treat people as intelligent beings worthy of respect and able to make choices for themselves.
First, let's tack down those shifting goalposts and remember that we're talking about executing "people" who have:
- been convicted in a court of law, AND
- had that conviction reviewed (appeal) for procedural, bias, etc errors and still found guilty.
There's just two possibilities at this point.
1) the person actually did it.
2) the person didn't do it and has been wrongly convicted.
In the former case, my goal is in no way punitive. I frankly don't believe that for the most hearty sociopaths, psychopaths, etc that commit the crimes that warrant capital punishment, that 'punitive' measures even reach them (much less any sort of rehabilitation). I don't frankly care. My point is utilitarian: these "people" (as you call them) have willfully made a choice to set aside their humanity and act in as inhumane a way as we can conceive, for some sort of benefit. As rational actors*, they did this but they have to live with the consequences of that choice. The rational thing for society to do in return is to remove this dangerous thing, and prevent it from hurting anyone else.
In the latter case - and I note that in this long, long thread of personal attacks, there has not been provided a single, concrete, contrary example to my original assertion: the cops don't just drive up and grab John Q Public off the street, and charge him with a capital offense. The individuals "innocently" executed are, by ANY standard, the absolute dregs of society, causing harm, misery, and untold pain to the people around them in many cases for DECADES. For every crime that they have on their arm's length rap sheet, there are probably at least a dozen others for which they were never caught. So yes, I'm saying again, as rational* actors they've made that choice, and while they may have been innocent of that particular charge, I'm willing to accept that they were worthless scum that we can simply be better off rid of.
*rational: some people will assert that these individuals are crazy, and thus not responsible for their actions. OK, but that seems to beg the question. If you have an unstable explosive that could harm people around at any moment, do you save it, give it therapy, maybe some counseling in case hopefully it can be useful? No, you dispose of it because it's simply freaking dangerous to everyone, and there's no desperate shortage of explosive that we can't find some later if we need it. There are 7 billion people on this earth. If you have 7 billion of something, you can lose a few and not even notice.