Not much of a reason to waste cash on it, from what the robots gathered we ain't getting anything useful by going there. And it's also pretty damn difficult to do.
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Then why Elon Musk and SpaceX want to establish a human colony there? This is not a rethorical question.
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They want to because Earth could become overpopulated. Well actually that's just the first thing to come to mind, probably others as well.