Colonizing Mars is cool and I hope it happens for that reason, but it’s a really expensive way to make our species more resilient. A network of hardened bunkers

Colonizing Mars is cool and I hope it happens for that reason, but it’s a really expensive way to make our species more resilient. A network of hardened bunkers and people paid to live in them part-time in shifts would be cheaper. And if Earth goes through a nuclear war and an fairly bad asteroid strike you’d still rather be on Earth, in a bunker, than on Mars, in a bunker. Mars is that bad.