Yeah the only catch is that it turns out humans are really good at warming planets up, and that’s one of the big stumbling blocks to making Mars habitable. Reversing the process is not something humanity has ever done before. So why not turn one of our biggest bugs and turn it into a feature? Plus if we are going to experiment with intentionally changing the atmosphere of a planet I’d rather we experiment on a place where the entirety of humanity isn’t currently living.
“Yes, we keep setting fires in the attic and flooding the basement. We don’t know how to stop that from happening. However, ignoring that, Carl, we are pretty sure we can figure out how to build a skyscraper across the street. And hey, if we screw it up, it’ll be across the street, not in the attic or the basement, which are still on fire and flooded. We might even figure out how to fix those by working on the skyscraper, maybe, you don’t know.”