Even if we do develop a sustainable human civilization on this planet using Earth's resources wisely ... the most compelling reason to colonize space is still t

Even if we do develop a sustainable human civilization on this planet using Earth's resources wisely ... the most compelling reason to colonize space is still the inherent precariousness of relying on a single locus. There are any number of ways that humans, even peaceful humans, on this planet may be wiped out by natural causes. Our species cannot be truly "safe" until it ventures out into space. It's the eggs in one basket problem.