That is what makes crime so heinous.
So your focus should be prevention at any cost first and foremost, then justice as prevention (= rehabilitation) as well. Murdering a murderer is pretty solid prevention though, I give you that.
Yes, but you can try. I can see why the loved ones of a murdered person feel someone is 'getting away' when he is still alive. Killing them feels much more like payback.
I don't that this does reasonably make sense, but I can understand where they are coming from.
I'm sure many find that it didn't feel like it at all, because of my argumentation. Payback will always be incomplete. It can never be paid in full.
Even if you kill someone over and over again (some Sci-Fi comes to mind), the perp always took the first step and elevated his role in society unjustly.
I get that he ruined (well, ended) someones life, but what does society gain from ruining his life in turn, to the point of what feels like mental torture: Being locked up for such a long time, all the while knowing that you will eventually just be executed.
From what I gather on Americans' comments about this over the years it's mostly about "not spending taxpayer money" to house, feed and take care of criminals that received a death penalty.
I don't know how true this argument can be given all the costs over decades associated with a death penalty judgment (appeals, preparation for death row, maintaining death rows, etc.)
Quick edit after reading the thread a bit more, an example of what I mentioned: https://news.ycombinator.com/item?id=26900987
I’m not saying I agree, I don’t personally support the death sentence, but if you’re actually interested in changing peoples minds it’s good to know where they’re coming from, and why they may not find your argument compelling.
I personally find the posts argument far more compelling.