[Malone LaVeigh]

There's nothing in my wallet worth dying for.
There's also nothing in my wallet worth killing someone for.

That being said, keep in mind that even with the spread of Castle Doctrine laws the use of deadly force is still pretty tightly controlled.
Even if you are involved in a righteous shoot and you escape any criminal prosecution, you can still find yourself dragged into court in a civil wrongful death suit. You're now facing legal fees that could easily run into the tens of thousands of dollars, even if you win. If the judgement goes against you, you could lose everything you own.

[mountainbunny]

Even if you are involved in a righteous shoot and you escape any criminal prosecution, you can still find yourself dragged into court in a civil wrongful death suit. You're now facing legal fees that could easily run into the tens of thousands of dollars, even if you win. If the judgement goes against you, you could lose everything you own.

This isn't true everywhere. In some places, if you have defended yourself or your home legally, you cannot be held liable for anything. The criminal's family cannot sue you in Colorado, for example.

I completely agree that nothing I own is worth another person's life, but if they break into my home while I'm there, I'm not going to assume they are there to steal things, but to hurt someone.

[YCTHouston]

That’s what sucks - you might be neck deep in legal bills no matter how right you are.