We know exactly what problem we’re trying to solve. It is inevitable that this rock will cease to sustain us at some point. Even if we humans don’t mess it up, between ice ages, asteroids, pole reversals, and an eventual turning off of the sun we are on a ticking clock here. And if we don’t have a self sustaining subsection somewhere else when that happens nothing else we’ve done matters at all.
Not vanity at all. SURVIVAL.
I hear and appreciate your point of view, truly
I take the Spiritual path and it makes no mention of our need to colonize beyond that which we have been given
To each his/her own
God Bless