I may have winged him, but not center-mass....put a hole in his thigh and he won't be running again for awhile and not as fast as he once did. But kill him? if the story is true....nah.
Two things:
A: when you are running after someone who just robbed you, I doubt that the average untrained person is going to be thinking, or able, to run and aim with the thought "I need to aim somewhere non-leathal, but able to slow him down, without hitting a major artery".
B: I'm going to take a wild stab, and say that you have not been robbed multiple times.
I came home to my house being ransacked, stuff broken, stuff missing, and had to spend an hour sifting through the wreckage of my home to find out what was missing, and what was broken. I can tell you, that if I had stumbled upon these sub-human bits of monstrous trash, I absolutely would have shot, and aimed to kill them.
It's very easy when you are sitting in your nice comfortable home, with no one bothering you, and none of your property destroyed or stolen, to sit in judgement of others.
Judge: 70 years for homeowner who 'hunted' intruder
As far as I'm concerned, this was injustice. The man had been robbed before. Some walks on his property and starts stealing his stuff.... and he shoots him. Yeah, of course. That's how justice is served.
Being sent to prison, because someone else was victimizing you, and you defended yourself.... is evil.