Yes, I do. It is engineeringly possible, but societally a horror prescription. I maintain that even the moon landing was an engineering dead end, it resulted in no major breakthrough which we wouldn’t have reached otherwise (for much cheaper) and the humanity benefited nothing but bragging rights. It was then used to further nationalism and exceptionalism by one particular society which went on to conduct many horrible acts of atrocities in the decades that followed.

The prospect of a Mars colony would be that except a million times worse. Humanity will never migrate to Mars, we will never live on Mars, we have nothing to gain by living there, and it may even be impossible for us to live a normal human life over there (e.g. we don‘t know if we can even give birth over there). The only thing it will give us are bragging rights to the powerful individuals which achives it first, who will likely use that as political capital to enact horrible policies on Earth, for their own personal benefits, at the cost of everybody else.

Saying "working toward a martian colony" is akin to saying "working toward a way to colonize the solar system". Mars is not very interesting once you have a methodology. The Moon is a much more practical place to start the process. Then aim at the asteroid belt.

Why colonize Mars? Why not Moon?