Bill it won't "all" go down the tubes. The planet WILL look after its self. Even in the event of human catastrophe reducing the population to a few tens of millions and virtually obliterating all technology and recorded history would not destroy all life. The biosphere would find another equilibrium. What does it matter that tens of millions might be displaced in Bangladesh in out lifetimes or that droughts and other extreme avoidable weather might cause mass starvation. Obviously driving that SUV and using coal powered electricity because it is a few cents cheaper, is a much better priority.


Now the inevitable march of entropy and the expansion of the sun to a red giant completely engulfing the planet in just a few billion years... Now that is something to worry about. But until then, eat drink and be merry for eventually the species dies.