"Humans had their chance, and nature selected them... for extinction." ~ paraphrasing Ian Malcolm, Jurassic Park. Human intelligence is a product of evolution,

"Humans had their chance, and nature selected them... for extinction." ~ paraphrasing Ian Malcolm, Jurassic Park. Human intelligence is a product of evolution, and that evolution apparently didn't provide us the kind of attributes that would keep us from destroying ourselves or our environment (or destroying ourselves is some kind of evolutionary advantage, but that's the kind of assessment that can only be made by whatever comes after us).