Should humans colonize other planets?

Space colonization has evolved from science fiction to serious planning as NASA and SpaceX develop missions to the moon and Mars while astronomers discover potentially habitable exoplanets. Supporters believe becoming a multi-planet species could protect humanity from Earth-ending disasters, though colonizing other worlds requires enormous effort and distant planets could take thousands of years to reach. As technology advances and space agencies plan long-term settlements, the debate has shifted from whether humans can colonize other planets to whether they should.