I’m of the opinion we’ll just do massive structures in space, lifting out of a gravity well just doesn’t make sense, if you can manufacture in space and we know there is a tonne of resources off plant in the solar system I don’t see why terraforming a plant is the smart play.

That makes sense, but it can easily take a century to get that production ready.

Meanwhile, SpaceX is preparing to start prepping Mars colonization in a few years.

I know, Elon's timelines always break. But his insane goals are also always reached after considerable delays.

I believe the TV show "The 100" experimented with this idea. The inhabitants of the orbiting colonies wait out the contamination of Earth.

https://en.wikipedia.org/wiki/The_100_(TV_series)