I leave my doors unlock because I do not want any broken doors.
My cameras will have it all recorded even the shot gun going off
as they enter. They record in color so the effect of blood and colorful brain matter goes flying all over the room. I'd like to get them in 3-D mood.
Enjoy spending the rest of your life in prison. To take the life of an intruder, that intruder needs to be threatening your own life or the life of another person. If you kill someone just for breaking in, you will be sent away for a long time.
Not that that would likely ever happen. You have to sleep sometime and with an unlocked door someone is liable to slip in and out while you get some quality time with your pillow. Oh wait, I forgot, you are a super badass green beret with all kinds of special forces training who will cut down any intruder as soon as they step foot onto your property. Easy up on the Call of Duty.