As a back up to Civilization. Nuclear weapons have put our continued survival here on Earth in jeopardy. Having Civilization spread all over the Solar System would have the additional benefit of not having to put up with people you don't want near you.
I used to think all that. But watching Artemis2 for 10 days gave me a new perspective. The earth is the exception to what’s out there. Most of the universe, at least the part we can observe, is just dead matter - bits and pieces of dead matter millions of miles from each other. There’s no place like earth. We will never flourish on another planet the way we do here even though it may be technically possible to creates bases. If we destroy this then sayonara to the only oasis of civilization in the middle of a vast nothingness.
“... the additional benefit of not having to put up with people you don’t want near you.”
For some freepers, the entire known universe isn’t big enough for that. Might as well stick with the bunker in Idaho.
No matter how far you run, the cockroaches and tax collectors will always find you.