According to the theory of evolution, why do we die? Not how we die, but either why it is more advantageous to die or why it's impossible to circumvent death despite the inclination to survive. This question previously had details. They are now in a comment. - Suzanne Sadedin

https://www.quora.com/According-to-the-theory-of-evolution-why-do-we-die-Not-how-we-die-but-either-why-it-is-more-advantageous-to-die-or-why-its-impossible-to-circumvent-death-despite-the-inclination-to-survive/answer/Suzanne-Sadedin