I agree with your point in general but it's worth considering that the act of getting off planet is a/the great filter.

Either because it tends to involve the development of Von Neumann probes that unexpectedly turn on their creators or because it signals to latent berserker probes sitting in the asteroid belt that we have reached a threat threshold and need to be eliminated.

Either way I agree that we need to try to get off this planet in a meaningful and permanent way.