I'm not convinced that most people will want to move back to their hometown after being away for any non-trivial amount of time. I certainly wouldn't. My old high school friends are different people who I don't know anymore (save for a few who who I'm still close with, who coincidentally also don't live in our hometown and wouldn't move back). My friends are mostly people I've met in my new town, and I wouldn't want to leave them without good reason.

Sure, people who grew up in $COOL_PLACE but moved to $OTHER_PLACE for a job might want to (and be able to) move back to $COOL_PLACE now, but I don't think that generalizes to most of America.