I've seen this sentiment a lot in manga, but tbh..? Literally everyone afaik that I'm descended from, parents, grandparents, grand-grandparents, they all moved far away from their hometown, and everyone is glad they did, made their new life somewhere else. And I also ended up also moving far away from my hometown. It's not that I particularly hate my hometown, but now as an adult it feels kind of weird being in your old incubator? I don't like being in my hometown other than to visit my parents for a short while.
I wonder if it's an evolutionary thing, that some lineages are just genetically predisposed to want to go away from where they grew up. It'd make sense, since it'd function as a mechanism to prevent inbreeding.