Acting in self defense is not the same as wanting to kill/hurt someone. Were they actively out looking for that or do they simply have a standard or line they will not let others cross when it comes to invasion of privacy and compromise of ones own safety and security in thier home? If someone is stupid enough to attempt to rob a home, they are also making a choice to put their life in danger of retaliation. When someone else puts you In that position, I'm sorry, I'm not going to assume he just wants a sandwich and means me no harm. To think there isn't a high probability the criminal doesn't want to be caught and might try to rid the scene of evidence, which includes my heart pumping, is not wise and im going to act first to avoid being wrong. Its them or me and they have proven they have no regard for my property, possession or safety aNd they have proven they are reckless enough to Put themselves in a dangerous situation. I can only assume he is also willing to go further. Not gonna let it happen. Its them first Sorry.