you haven't responded to the myriad comments pointing out when we feel it's justified to kill someone, like defending yourself and others or at times of war.
Even in self defense, to me, killing someone is last resort.
I get robbed at gunpoint: i give them my wallet.
I get attacked for reasons beyond my control (gaybashing for example): i'd try to run, as it's usually a group of people. I'd cry for help. I'd try to inflict enough pain to get away.
I'm at war. I don't want to be at war. I also noticed people larping here, like they want to be in a war. To me that's crazy.
I get wormholed back to baby hitler: Wouldn't kill him. Would encourage him often to persue arts.
More specific to this case: it's not self defense if you stalk a person then kill them, in my opinion.
That's incel turned rapist/murderer thinking, in my opinion.