We don't even know if we can live healthily in mars gravity. That's how clueless we are. The main reason, however, is that humans can't co-operate on a scale t

We don't even know if we can live healthily in mars gravity. That's how clueless we are. The main reason, however, is that humans can't co-operate on a scale that would be needed to do it. World events show it clearly right now. This is not the age of colonial exploration where a small band of Europeans use their weapons to overpower the natives and grab their resources and take their fertile land. This is deciding to live in the middle of a frozen desert where there is nothing.