IMO: the bleeding obvious is to not put property above human life. You kill someone and you harm everyone that person knows. You create a terrible void. It could be someone who is going through difficult times and driven to take drastic measures. When you kill that person you take away everything they are. It's permanent and no hope for his or her redemption.
Someone stills your car or boat you can replace it. Yes, it violates you. It hurts. Perhaps it scars you for life but you live. You can be with loved ones and they can be with you.
I don't understand why life is so cheap for some people. That's just my opinion. The way I see the world. I understand that people can be evil and do evil things. But I cannot justify killing someone for property.
And this "killing someone for property" is still emotionalist rhetoric and a red herring. Human life is valuable, yes; but that value is not an absolute. Unless you're a pure pacifist, you've already accepted that human life does not have an absolute value.
Someone who commits a crime has already announced to all and sundry that they have no intention of respecting human rights, that they do not have any interest in the social contract, and therefore they forfeit the right to be protected by any social contract. If you threaten others, you should expect others to react accordingly.
And you still have not explained how you can reliably and consistently determine whether a crime is strictly a property crime, and that the perpetrator does not have any sort of violent intent. Magic? Psychic power? Particularly when burglary and home-invasion robberies are very often precursor crimes; and a path of escalation to violent crimes such as rape and assault.
A person who violates another's home typically isn't going to become all apologetic and leave politely if he discovers someone at home.
At best, he'll run away if he believes the person is capable of causing him harm in self-defense. I'm lucky that's what happened to me. I had the drop on him, he couldn't see me clearly, so he no way to know that I wasn't armed at the time, and he fled. Had I been clearly unarmed, I do not know if I would have been so lucky. Some of my neighbors have not been.
If someone is breaking into my home, or my neighbor's home, I have no choice but to assume violent intent; because I am not psychic and have no way to know for sure that they're not intending to do me or my family harm. If I see someone breaking into a neighbor's house, I have no way to know for sure that no one else is there, so I will act accordingly.
Even if, as you constantly parrot, it's "just a property crime" and they have no violent intent, then I shouldn't be under any risk if I attempt to apprehend them. If I do attempt to apprehend a burglar at my neighbor's house, and he submits without resistance, then there's no need to use force. I'll simply wait until the police arrive to pick up the perpetrator. If, on the other hand, the burglar does resist with the threat of harm, I'm then justified in using force to defend my self.
I currently live in a neighborhood where most people think like you do; and would not lift a finger to help their neighbors. Consequently, there is a lot of crime, violent and otherwise. I wish I could afford to move.