Mars could be terraformed, to eventually create an environment suitable for human habitation. But that would most likely take hundreds of years. Still, a start should be made. Because it would be good to have an alternative planet for the human species to survive on, should the Earth be rendered uninhabitable by some truly cataclysmic event (major asteroid or planetary collision, full-scale thermonuclear war, etc).
Still, I wouldn't go either. And I hope they find a bunch of individuals who can all get along really well together...you would want really mentally & emotionally stable people for such an undertaking. The kind of person who could, if they had to, survive in a prison-like situation quite happily.
Then the Blessed One, picking up a tiny bit of dust with the tip of his fingernail, said to the monk, "There isn't even this much form...feeling...
perception...fabrications...consciousness that is constant, lasting, eternal, not subject to change, that will stay just as it is as long as eternity."