Get better friends. With friends like that, you'll go to jail for a long, long time.
You are actually saying that if I am at home with my family and someone breaks in my house that I cannot shoot them?
This is a basic case of self defense. Would you have me ask the would-be robber whether he was after just my property or the 'ole tie-em-up and murder the family thing?
I think I would take my chances and shoot the SOB in the head.