As much as I'm a space nerd and avid sci-fi reader myself, I'm not that convinced. We have plenty of places on earth that are more hospitable and cheaper to get to compared to space, like the bottom of the ocean and mountain tops. Some of those places even have valuable metals to mine. And I don't see people rushing to live and work there. I'm not saying space colonization can't make sense, or that it won't happen. My gut feeling is, it will happen but not in the way we envision today, similar to the vision of flying cars. Where the technology is there to make it possible, but the economics make it impractical as of now. Also the whole biosphere destruction is not gonna put our focus elsewhere, except for those that want to flee into some expensive escape fantasy.