Thanks for the thought provoking discussion guys. For one thing, this has made me think more of taking a certified self defense course designed for those that carry. I have learned a lot here, but obviously not enough. No military or police background in my case.
That being said, I was pretty sure I was the one who left the door open. Now that I think about it, my dog slid out the side door this morning and the only way to get him is to open the door to the truck and offer a ride. So yes, I left every single door in the house unlocked! I was done prepping for the day and the last task of the morning was done so once I got him in I left. Ooops. That was in the back of my mind pretty hard. If I really thought someone was in here I might have re treated. Pretty damn sure I will after this discussion.