Energy required to move off-planet
Would probably destroy the planet, ecologically speaking. I don't think colonizing other worlds is the answer to survival. I think relaxing laws and dissolving intolerant social norms will permit flexibility in our ability to adapt to changing conditions. Well, the need to survive will require it. Kinda like the uncomfortable market conditions. If you don't do some things voluntarily, eventually it is imposed upon you.
Man, I don't have to do anything. I could just sit back and watch the world devour itself. That reminds me of a picture of a fish swallowing its own tail..... no matter how hard it tries, it only gets so far.