This is such crap, if someone who isn't meant to be in your house is robbing you, and you have the chance to take them out (possibly before they even know you have them in your sight) what do you do? Yell and say 'hey man, I got this gun here, do you have a gun? If so, we're gonna have a shoot out right now, or you can run away, ok?' Usually them just hearing a movement is enough to cause them to react, let alone have a chit chat of fairness tactics.
Thinking of my own home, I live up stairs most of the time. If someone is coming up my stairs and I have a chance to shoot them at an ideal vantage point, i'm taking it. I'm not going to ask 20 questions to determine the threat level and intent, they forfeit their life the moment they come into my home BECAUSE I have no way of knowing what their desire is for sure without alerting them. If they are already alerted, I guarantee you they won't stand around for me to ask questions, if i'm lucky, they might run, but otherwise they may come after me or worse, my fiancee, and I'll do my best to stop that from even being a possibility.
I hope to never have to deal with a home intruder in my adulthood, hopefully a decent security system and other elements will be a natural deterrent and I can live a nice peaceful life until I die, but if someone is in my home and they shouldn't be, i'm going to assume the worst and react accordingly. Know a good way to avoid dying? Stay the hell out of peoples houses unless invited, it really is that simple. For people to get in your home requires (usually) forceful entry, as far as i'm concerned anyone willing to go that far is likely to do something even dumber when confronted by the owner.
