Just a few thoughts:
I really do like my neighbors, who live across the street. I will not “exchange gunfire,” or “trade shots,” with an attacker, who is on the front porch, or on the front walk, if I am inside the house. The safe back-stop IS the attacker’s body, so, I will only shoot at an attacker’s body, and that only if justifiable/excusable, legally, AND, according to my personal moral code. (Just because I can, does not mean that I should.)
I am capable of armoring-up, to include level III plates, over IIIA Kevlar, and a IIIA helmet, from my LEO-ing days, when I bought better armor than I was issued. I realize that not all of us can justify buying such armor, but I have it, and it gives me options that I would not otherwise have, whether I decide to hunker-down, or go mobile*.
Those of use living in thin-walled bungalows, and stick-frame houses with fake stucco, should keep in keep that the exterior walls are NOT cover, either, unless we have modified them. Modifications that add substantial weight should be done with attention to the engineering details, lest the modification fall off the house, when the foundation gives way.
A home invader may well decide to cut power to the house. The ARE solutions for that scenario, that would enable the homeowner to continue to monitor the exterior of the home.
Again, just because I CAN, does not mean that I SHOULD.
*I am not recommending that anyone go mobile, in an area with decent realistic police response time, because one may be jumping from a frying pan, into a fire. Know how to dance, in the fire, if going mobile.