The following is an excerpt from an interview with Stephan Hawking:

Charlie Rose: Thinking about this universe that you think about, what worries you the most about the future of the universe?

Stephan Hawking: I am not worried about the future of the universe. The universe will continue whatever happens, but the future of the human race and of life on earth is much less certain. We are in danger of destroying ourselves by our greed and stupidity...

...If we remain confined to planet Earth, sooner or later we will destroy ourselves. The only long term survival plan that works is to spread out into space. The sooner we start, the better.

Maybe my goal in life shouldn't be to “save the world” anymore, maybe it should be to delay our destruction long enough for us to move to a different planet.