Originally Posted by Donkey®
If you are making a plea of self defense, you have to prove in some way there was a threat. It isn't just "hey, I felt threatened." Yes, it is reasonable that someone can feel threatened with someone in their house. My contention is that I wouldn't.
But where you are making the wrong assumption is the part of "making a plea". There is no plea to be required here, because the owner has the automatic assumption of 'self-defense' by virtue of his home being invaded. Legally he is not required to justify his contention of thinking he(and his family) was threatened.
Morally, he could have used better judgment, in hind sight. And there I would go along with a goodly portion of your argument. But legally, if he didn't believe he had the time to think about the situation any more, it was he, who must live with this. Somehow I suspect he will be paying a price for this for the rest of his life. I know I would.