He also gave up sleeping with various mistresses, however, given current culture, I doubt you think that is evil.

Arguing morality with someone who is holding a gun to your head doesn't sound like a very smart thing to do. The most I have done while being held up was provide the assailant a set of scriptures with a number to call if he wanted to discuss morality while not holding a gun. If they are holding a gun or otherwise threatening current violence to you then that is usually not the time to be discussing morality as they are most likely not acting rationally.

Discussing morality with someone that is suicidal can sometimes help. Still, one should call for professional assistance if it is available.