Actually I would say that the concentration camp scenario is the most likely candidate for the greatest of harms, although it may be exactly on par with murder in some ways. But that's not important now. If I were doing the same, I'd prefer to know why murder is wrong. Well, on that I will agree. Here is my argument.
Murder is wrong.
Happiness is central to your self-interest. I'll think about this one. And by the way, thanks for all of the thoughtful comments. Thank you for yours. I'll read it carefully.