I'm trying to keep this neutral, so I'm using a rather cut and dry example: Somebody kicks in your door with a pump action and starts shooting- There are _some_ jurisdictions that require you to try and flee. You kill them and they werent bodily blocking your car in? Murder charge. investigation finds a sabatoged engine? Doesn't matter.
Stand Your Ground assumes reasonableness and codifies leaveing the fight or flee decision up to the individual.
Ultimately- you're going to have PTSD either way.