> Survival. We will go extinct at some point if we stay on Earth. The more spread out we are, the less likely any single catastrophe is to wipe out the entire r

> Survival. We will go extinct at some point if we stay on Earth. The more spread out we are, the less likely any single catastrophe is to wipe out the entire race. Indeed. Think of it as a really good remote backup plan. Colonizing another solar system would be an even better one.