In 60-s, people imagined how population would line up for space colonies to build a farm there. And a big house.
Now, people want not just live on Earth. They would prefer to live in, let's say, the EU. And not even all of the EU; how about a Paris arrondisement? That's the place we find desirable.
A few people would like to be the first to space colonies. I fail to see how a few billion people would like to move there, to become some sort of worker drones. Plus, this tend to not end well. Compare how well do people in Spain live, and compare it to how people who went abroad to South America live.