This is a question I don't think there is a cookbook answer for. For people who live in states with no "Castle Doctrine" you definitely don't have the law on your side when it comes to an intruder in your house. For those of us who do, we are afforded a little more leniency in our homes. I guess my feeling is I keep my doors locked for a reason, and no way anyone is mistaking my house for someone else’s, drunk or not. If I hear my door being broke down and they make it past my dog to where our bedrooms are, they are fair game. I WOULD be afraid for my life and that is enough justification to pull the trigger in my mind. I have two small children whose bedrooms are next to ours. I can't afford the luxury of waiting to find out the intentions of the intruder, especially with rest of my family in the house. They would get no warning from me except hearing the slide of my pistol chamber a hollow point.