What is their mental health condition like? How would the average person on earth cope with the extreme conditions they might face on Mars? How many of the current crop of Gen-Z even have a chance to be considered - even if they have technical skills?
I heard a podcast with a former astronaut, and he was explaining why he wouldn't go to Mars just because of what you cited. Mental health will be a difficult challenge to face the extreme conditions of the planet. The planet suffers with extreme radiation and weather. He mentioned that the first group of humans there would give a nice reality show with one fighting with the other and with big fights.
People need to remember that a trip to Mars even talking about 20 years will be a trip without return. It will be comparable with the first Europeans in the Americas, arriving to a new land without structure, but with terrible environmental conditions.
In twenty years from now, the conditions of Mars might be better than on earth at the rate we are heading down a slippery slope to oblivion! :D
Maybe...but what is going to be cheaper? "fixing" Earth ? or making a new Earth on Mars?
I assume the idea is to build a sustainable Mars, and then leave earth to die - and the 99.9% with it.
I can't see this now since the terraforming would cost much more than avoiding a bad future here ! That could change of course in the next 20 years... For now I see Mars as a pit stop to refuel and get more food so humans can explore further the universe xD