It's also dangerous to think humans have a destiny on earth, in the sense that our planet will just keep providing. Sooner or later, it'll become equally hard t

It's also dangerous to think humans have a destiny on earth, in the sense that our planet will just keep providing. Sooner or later, it'll become equally hard to survive here as it would be in space if our processes do not become circular. We still have a long time to get there in many regards, it's only energy whose methods we need to change asap (which is relatively easy, we have the tech and means; we don't have the tech by any means to be circular in many other ways).