Humans are not good at coping with risks they have never encounter before (including me), as exemplified by the politics of climate change (profits over people - foundation of capitalism). My guess is we have less than hundred years of existence on this planet - based on our ongoing and accelerating destruction of the planet (aka capitalism) - with a booming population explosion added to the mix. My personal guess is we have less than hundred years of human existence on this plane - before we become extinct. The good news (for me) - is I will be dead - before the full effects of man-made climate change kicks in (example: see Alaska). How long do you think human existence has left on this planet? Do you see humans (on a massive level) migrating to another planet - not in our solar system - in your lifetime?