The more I learn about cataclysmic events in our earth's history, and the ones that are certain to occur some time in the future of our planet, the sillier our widely held beliefs about mankind's eventual colonization of planets or moons within or without our solar system seem. They sound like pipe dreams.
My predicition is that either mankind will make the earth inhospitable for human life long before meaningful colonization can occur, or that some natually occurring catastrophe will happen that will extinguish humans, or at least severely curtail our numbers. We're just temporary tenants here. We're not the final end products of evolution with a special place in the unniverse.