Which consequently makes it impossible to use the doctrine of self-defense to try and justify homicide after-the-fact. What's worse for a potential murderer is

Which consequently makes it impossible to use the doctrine of self-defense to try and justify homicide after-the-fact. What's worse for a potential murderer is that all of the evidence they had available for them to make a decision is also available to others afterwards, all of the movements they make are recorded, etc. Physical danger is not the panacea you make it out to be. Physical danger is what allows trigger-happy pilots to be trigger-happy without consequence. You don't want these pilots to be in physical danger.