Think of the low dirty politics involved when you debate with your significant other over the best setting for the thermostat. Now bring in the United Nations a

Think of the low dirty politics involved when you debate with your significant other over the best setting for the thermostat. Now bring in the United Nations and pretty much everyone else on earth. The creation of any kind of central authority with the power to make truly existential decisions for humanity is an existential threat to humanity. There ought to be a clear and imminent more dangerous such threat before we resort to that. And if we do, an even higher priority will be to put our eggs in multiple baskets, so that the threat is no longer quite existential.