No one, including Musk, says that colonizing Mars is a "good" idea economically or practically. This guy's arguments are fundamentally missing the point. But

No one, including Musk, says that colonizing Mars is a "good" idea economically or practically. This guy's arguments are fundamentally missing the point. But here's one advantage Mars does have- it's far from other humans. And humans, not asteroid strikes or supervolcanoes, are the most worrying potential source of the catastrophic events we want to protect our civilization from.