> Most plausible post-apocalyptic Earths would be far easier to live on than Mars. Most, but not all right? So then you agree that there is still a case for co

> Most plausible post-apocalyptic Earths would be far easier to live on than Mars. Most, but not all right? So then you agree that there is still a case for colonies on other worlds, if only to cover those less plausible scenarios.