Under the current administration not only will we not be going to Mars, but even If we did and a astronaut was left behind. No way no how would current political parties in Congress, ( much less our current president) spend the money it would take to save said astronaut.
My real wonder would be if the majority of Americans would okay the amount of money it would cost to save that one man? I know Maga wouldn’t. But the rest? Just made we wondered. Now with Project Hail Mary coming to theaters and the excellent novel. Its the same question.
If someone is left behind, he will die anyway whatever the amount of money thrown to his rescue. Mars isn’t the Moon, it’s a much more hostile environment, even just the journey from the Earth to Mars is a much more hostile environment.