I'd say money is usually the biggest reason. Not that easy to just pack up and leave, especially if you don't have a job lined up.
You gotta have somewhere to stay, you gotta pay rent, and you gotta eat. If you don't have a job, good luck getting a crib. And if you don't have an address in the area, good luck getting anybody there to call you for an interview.
While that is true, there isn't a greater disservice to yourself than staying in the same 5-30 mile radius your whole life.



