One hesitates to suggest that there could be a good higher than threatening to bomb one's political opponents, but human survival off this planet, indeed, human expansion into and conquest of the galaxy, may be one of those things.
This is one small step for free enterprise, one giant leap for mankind. The government won't ensure that humans escape this planet before the comet hits, giant tsunamis strike, the core reverses polarity, or the Daleks arrive. The government couldn't find a clue if Colonel Mustard was appointed head of Homeland Security.
Private enterprise will save us, even if it has to destroy the earth to do so.