Good point about the nuke plants . but hopefully someone would "disarm them" as collapse approached. You never know though Man's arrogance may be the most astounding thing about us. But I still believe life would find a way. It is not required that life match our definition of intelligence to be dominate. We have only been here for a fraction of the time that the dinosaurs were and already we are debating if we will wipe our own sorry assess out. LOL
I personally think that "the meek shall inherit the earth" in the form of insects. But my children's children's children bones will be long faded to dust before we see if that happens or not