I can think of one or three very good reasons and easily justified reasons for someone to be dead, face down on the floor and an entry wound in the back or back of the head…
I’ll start with said intruder going towards my wife/child.
I’ll follow up with a fight for control of the weapon…or trying to retrieve/grab one…
And no, we don’t have to agree with you

, though I’m pretty sure you would agree with those two…
And
That’s why defense lawyers get paid big money to test it in court. Way too often.