It's a lifestyle choice.
Don't put your morality on him.
He was born that way.
You see it in nature, the preying mantis kills it's mate too.
Psychological treatment to stop murderers from murdering should be illegal.
Kindergardeners should be introduced to the fact that not only does sometimes Bob marry Ben, but sometimes Bob kills Ben and that too is a normal family.
Most EVERY one of these likely,particularly 2-4, my good CHRISTIAN friend would probably agree with. We can BARELY talk anymore—without a serious argument occurring over my beliefs and her (lack of ) beliefs.
Because men never kill their wives and wives never kill their husbands.