I think no other justification is needed to end the death penalty than “it’s inhuman and barbaric”. Even discussing other factors arguments and considerations dilutes the core point that’s it’s straight up wrong unethical and inhuman to murder others in the name of the law. Paul Graham has a valid point, but if you say “it’s wrong cause it’s inaccurate”, implies it’s right if it’s accurate. And it’s not... the death…
I think there is a somewhat reasonable argument that a punishment should mirror the crime, and any less than inhuman and barbaric to the inhuman and barbaric lacks actual justice? 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…
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.