Earlier quoted context omitted.
It is a bit of a semantic dispute, but not an unimportant one. We are causing a major extinction event that is up there with the worst ones the Earth has experienced. That said, the end result is likely to be that we either go extinct or come very close and the remaining life on Earth picks up the pieces and starts re-evolving new biodiversity from the diversity bottleneck. It's happened before and life on Earth, as…
I think we have the technology now (or in the next 100 years) to move some of our people into moon bases here on earth. If I were Musk I would be building these now.
Even a completely 'trashed' earth that renders billions displaced or suffering amidst ecological catastrophe is still infinitely more hospitable to life than celestial bodies that are completely devoid of that benefit in the first place.