Tolkien didn't call death “The gift of Ilúvatar” for nothing. In fact, even in our world, age-related death is an evolved trait, this isn't something obvious b

Tolkien didn't call death “The gift of Ilúvatar” for nothing. In fact, even in our world, age-related death is an evolved trait, this isn't something obvious but that's something that arised through the natural selection because it improves fitness.