While I can agree, to a point, with how you handled your wife and daughter wanting to learn to shoot, telling them to consider everyone they meet as someone they might have to kill is too much. And reinforcing that by asking them over and over if they have thought about killing a person is probably not helping. I have asked people to think on whether or not they could take a life IN DEFENSE OF THEIR OWN when asked for advice or training, but I limit it to criminals only. And I would never dream of asking ANYONE if they had thought of killing someone, not even a criminal, after that first time, to me that smacks of mental abuse. I wonder how you would feel if you were required to go through this yourself?