Someone who is very unhealthy might also fail to be very emotional after killing an attacker in self-defense.
By that, I was referring to someone who is very physically unhealthy (old, etc.), not mentally. Long term, physical illness can generally wear a person down.
you people are scary. I feel extremely bad for the 15 innocent people that were killed. Especially the children. I would feel very bad if I hit someones dog. You people all feel bad for the shooter. What needed be done to protect more innocent lives from the same fate was done. Feeling guilty about that is just plain useless to society, and the health of the person who did what they had to do. Guilt might prevent the law enforcement officer(Or other person) from taking action the next time they were forced into such a situation. And then innocent lives would be lost. I suggest that you all look at your own mental health.