I guess I’m now playing a bit of Devil’s Advocate. I don’t know about you, but if I came home and found a stranger sitting on my couch, I’d consider that a fairly large threat. Home invasion robberies are common enough where I live, my house has been broken into a couple of times, I’d feel very very threatened by a random stranger inside my home.
This has happened to people and happened to a woman I know who deliberately came home early, because she had good reason to believe that someone was entering her house. And there he was! You can bet she felt threatened. She didn’t have a weapon. But it basically upset her life - she felt compelled not only to move, but to move far enough away that this (potential) stalker could not find her. She uprooted her whole life.
The jury will have to use its own views on what constitutes a reasonable threat, but for me, most of my students, and many people I know (including most of the cops I know), finding a random stranger in my home (having obviously broken in and already committed a felony) is in and of itself...a threat.
Don’t know about you, but I don’t have a permit to carry and I don’t carry pepper spray from my car into my living room. I would be otherwise unarmed. But if I could get to a weapon, I don’t think I’d be waiting for that person to, say, try to lunge at me. In all honesty, not sure how I’d react but would feel immediate threat upon seeing an intruder.
At the same time I personally would not be prepared to use deadly force. Retreat and 911.