Unless you live in a state such as FL which just signed the "Castle Doctrine" earlier this year you'd better have a lot of money in the bank and a team of top notch defense attorneys before you choose to use lethal force against someone just because they are in your house. Just being in your house does not automatically imply danger to life or limb.
Never said you could shoot the girl selling cookies because she wouldn't leave. I gave examples of crimes, which you can shoot for. I agree with most of you points, but they are speculating on specific circumstances.
However, these two are not quite accurate for NJ.
3. It was 100% necessary to use lethal force. Why didn't you just grab a baseball bat?
4. The perp was armed. You better be darn sure that was a gun or knife in his hand and not a non-lethal tool he just used to break into your house.
For number 3, you are under no obligation to grab a bat to face someone with, lets say a crowbar or screwdriver. And those same two tools could be used to break into the house, so number 4 isn't quite right either because if someone is coming at you with a crowbar after breaking into your house, you certainly can shoot them.
I was giving an example about how the law views entering a house different from entering the woods. If you want to get into specifics about...well what if this, or what if that, we'll be here for days.