We’re physically built to be mobile - the extent you can take your community with you has always been relevant
I’m sitting in Virginia USA with 50% of my neighbors being migrant families of 5+ people usually across three generations
I’m not sure what data you’re working with. In fact there a whole lot of ignorant politicians that want to stop migration precisely because of how valuable of a tool it is.
Some humans lived nomadically, moving all the time, as a way of life.
Being forced to do the second because nowhere is stable enough to do the first is what we're talking about.
That colonization happened when there weren't other humans there. Later colonizations were either unsuccessful or led to very nasty events.
Also, today jobs are concentrated in places where things are expensive.
You're talking about time scales on the order of several thousand human generations.
Take any human over the course of the last quarter million years, the chances are they didn't migrate away from their communities.
> Millions of people migrate every year today
A just society that doesn't force them to.