Elon Musk (of Tesla Motors and SpaceX) makes a case why it is an imperative for the Mankind to colonize Mars. This guy is awesome! :)
'I think there is a strong humanitarian argument for making life multi-planetary,' he told me, 'in order to safeguard the existence of humanity in the event that something catastrophic were to happen, in which case being poor or having a disease would be irrelevant, because humanity would be extinct. It would be like, "Good news, the problems of poverty and disease have been solved, but the bad news is there aren't any humans left."'
It's a funny reading too. In the context of NASA's progress with space exploration:
Watching NASA astronauts visit it [the ISS] is about as thrilling as watching Columbus sail to Ibiza.
The awarding of this contract became more urgent in March, after the US sanctioned Russia for rolling tanks into Crimea. A week later, Russia's Deputy Prime Minister Dmitry Rogozin quipped: 'After analysing the sanctions against our space industry, I suggest the US deliver its astronauts to the ISS with a trampoline.'
Read more here.