There is also no external motivation to colonize Mars whatsoever. I.e. if there would be an alien ship or alien structures full of technology there would be a p

There is also no external motivation to colonize Mars whatsoever. I.e. if there would be an alien ship or alien structures full of technology there would be a permanent base(s) on Mars since 1980s and we would be racing who can send more people there to secure as much knowledge as possible. But because Mars is a cold desert then there is really no demand for a 1+ million city on Mars. Like building a city in a middle of Sahara. Sure it is possible, but what's the point?