

To me, there are two reasons we’re doing it too soon;
- We don’t really have technology needed to build a self-sustaining colony anywhere outside Earth; say, a colony on Mars is inherently dependent on Earth’s supplies, and will quickly die out as Earth does too; the technologies needed can largely be developed on Earth;
- The chance of some asteroid obliterating Earth in the coming millenia is so minor we might as well focus on much more real threats.
Exactly
Or those “terraform Mars” fantasies
TERRAFORM THE DAMN EARTH FIRST