The compounds in NZ, mountaintops, deserts, islands, they are the now. There is clearly a drive to get off planet. It will most likely fail but it's happening.
No, because there is literally no where to go. Mars is 100X harder to live in than Antarctica, which we still can't live without constant resupplies from developed areas of Earth. If those are gone, we can't live on Antarctica, let alone Mars or whatever (perhaps mythical) exoplanets we could only reach after hundreds or thousands of years on generation ships (which we also don't have the technology to make anytime soon)