> if they're anything like humans, there would probably be a few crazy beings who would do it just to do something extreme, but aside from escaping a dying worl

> if they're anything like humans, there would probably be a few crazy beings who would do it just to do something extreme, but aside from escaping a dying world, i can't see any reason why such a journey would be attempted at scale. How about the promise of future prosperity for whatever your group was, having a whole planets resources at your disposal? If we look at human history it's full of mass migrations, the colonization of the new world (original and 16th century) and the migration period (https://en.wikipedia.org/wiki/Migration_Period https://en.wikipedia.org/wiki/Migration_Period) come to mind. These weren't just a few thrill seekers but hundreds of thousands/millions of people.