Whether it's right or not morally; what you're saying is not right legally. The castle doctrine laws are gone on most of the US or are gray areas at best. Usually the law allows that you can't retreat any further than your own home and yet; the law also only gives a person the leeway to defend himself 'as much as needed to remove the threat'. That's a huge gray area.
Huge negative there. Castle Doctrine laws are in full force in TX, LA, MS and most of the South. There are many states, (TX and LA I know, but others as well), that passed laws that not only absolve you of criminal charges in the case of a home invasion or burglary, but also give you total immunity from civil suits brought by the scumbag or his scumbag family.
In TX, you have the Right,
specifically enumerated in State Law, to use deadly force to stop a felony in progress, even if you are a third party observer. That's right, since Burglary is a felony, I can shoot to kill over my property, and you better be sure I will. Will I get involved in stopping a 7-11 holdup or a burglarization of a neighbor's home? Probably not, but I'll d*mn sure shoot a trespasser on my land.
Sure, maybe my life isn't threatened by my TV being stolen, but it's called dignity and the right to live as a free and proud man, not being cowed or victimized by low-lifes and predators. If you're not willing to defend that, then you really don't have anything worth defending, IMO.