Absolutely. Even recorded history is full of migrations of large groups of people (anglo-saxons, repeated migrations out of the Asian steppe, mass migrations of the Native Americans after European arrival, etc). If we could reach high enough state of moral development we might even come to see migration as a human right. Though I believe impending material poverty will make that unlikely.

In spite of my own personal challenges, I'm actually more hopeful than many people seem to be. (Edit: at least for humanity. Not necessarily for myself.)

https://news.ycombinator.com/item?id=22028732