Sorry, I have to politely disagree.

Space exploration could save humanity in so many ways. Nevermind the big "what if" discoveries that would impact the trajectory of our entire species, we also discover valuable science along the way - things that help us in our every day life.

More importantly, the country with the most advanced space agency by default has the most advanced weapons. A hostile nation could pretty easily tow a small asteroid toward Earth and wipe our any country they wanted. Rocket technology, fuel technology, etc.

Correct me if I'm wrong, but the space race helped to collapse the Soviet Union to some degree, didn't it?

Regardless of whether my last point stands, I think space is incredibly important to humanity's future.