The dirt is toxic. There’s no magnetic field so there’s lots of solar and cosmic radiation. There’s no water to speak of. Certainly none liquid. There’s no air

The dirt is toxic. There’s no magnetic field so there’s lots of solar and cosmic radiation. There’s no water to speak of. Certainly none liquid. There’s no air to breathe. There’s no food to eat. It’s cold. There’s not enough atmosphere so meteors are actually a problem. Good luck keeping that dome intact. Perhaps humans could live in lava tubes. If we wanted to do that we could live in caves on earth. Nobody does that because it would be unpleasant and difficult. But less than a thousandth as difficult as living on mars. To say nothing of getting there. A mars colony would be entirely dependent on earth for the next several hundred years and would probably be a hellishly unpleasant place to live. Also the primary person pushing for colonization is a narcissistic man-child who can’t tolerate even the slightest suggestion that he may have made a mistake even when the mistake is blatant, obvious and egregious. Not the kind of person you want to depend on for your air water food and heat. If you think he’s bad now just wait till he’s largely beyond the reach of the law and holds the power of life and death in his hands. Quick name a hundred people he has lashed out against for disagreeing with him in even the mildest of ways. You can actually do that and it should be terrifying to consider.