The goal of a colonization effort is never to make the new place more appealing than the old place for the majority of people, or even the median, or even a siz

The goal of a colonization effort is never to make the new place more appealing than the old place for the majority of people, or even the median, or even a sizable minority. You want Mars to appeal enough that you can get dozens or hundreds or people who have both the means and will to do it.