Why Humanity Destroyed Itself

The real reason we may destroy ourselves isnt really to do with politics or economics or even warfare. It has to do with our minds. One day, if human civilisation ever wipes itself out, aliens or one of our successors will cast an eye on our ruined planet and ask themselves what ever happened to homo sapiens. Their answer might look a little like this. The root cause wont be the specific catastrophe, conflict or devastation that eradicates us; the problem will begin with the architecture of the human