Why is it considered bad if a person kills another one with a knife, for example? After all, it's just a complex biological machine programmed to survive and reproduce (the human killer) using a sharp object made of atoms to damage another biological machine also made of some atom arrangement. How does it affect the universe at all? Asteroids will keep on moving, planets and stars will keep orbiting the galaxy. The universe will inevitably die in billions of years and all matter as we know it will collapse. So ethics and morals seem kind of silly to me. P.S.: I do not intend to kill anyone.