I'm a pragmatist not an idealist in this. There are so many unknowns, I can't say it is impossible of course.
As for spreading life, that's a little like saying because someone can have kids, they should.
(, Fri 24 Sep 2021, 1:07, Reply)
No it really isn't anything like that.
Robert Zubrin is a pragmatist too, listen to what he says about colonising Mars.
Because the problems Mars has are solvable by employing the very methods used to create the problems on Earth. Mars is an industrialist's dream, a planet that gets nicer the more greenhouse gasses you release into it.
(, Fri 24 Sep 2021, 15:10, Reply)