And I would of course never try and change you. But take the following:

Someone breaks into my home and is holding a gun to my wifes head. I am armed. I can either: Let my wife be executed, or kill the assailant.

I will always choose the latter; and no amount of psychology, philosophy, laws or morality of killing would ever stay my hand to save my wife's life.

Using your definition above that it is always wrong, and always letting someone die is a better option - I should walk away and sacrifice my wife. Won't happen.

However, having said that and under the understanding we'll never agree - I'll still buy you a drink if you come to town .