Unfortunately, natural selection does not concern itself with cultural or moral sterility. It concerns itself with one thing, and that is survival. Unfortunately we are not discussing myths here, nor are we discussing murder. We are discussing preprogrammed death, not death by other causes. Death is necessary for life.
Death revitilizes life.
But this has nothing to do with death arising by natural selection. How it arose by natural selection is the question at hand, not that it exists or is necessary. I don't, however. Moreover, I still see no evidence to change my view. In a universe where physical systems are constantly in a state of wearing down, and where organic biology exists only by indulging in enormous waste, death of individuals, an event that has absolutely no effect on the cosmos other than to provide the seeds for its localized revitilization, it is perfectly expected that biological organisms will wear out and die.