Read the scifi novel "The Shadow of Olympus" if you want to know what humans should be doing- exploring and coloniozing Mars. Humanity has all of its eggs in one basket now. A large asteroid impact or a nuclear war could destroy civilization on this planet. Also, without a new frontier, technological, economic and social progress on Earth will stagnate. Look what the exploration and colonization of the western hemisphere did for European civilization from 1492 to 1882.
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