I've moved plenty in my life, both as a child and as an adult. The most common reason people don't move is because they are afraid to leave the social circles.

I've moved plenty in my life, both as a child and as an adult. The most common reason people don't move is because they are afraid to leave the social circles. And what a lot of people don't realize is that their their social circles may not actually be that strong anymore now that they have become adults and had children... which then it just comes down to them being afraid or "just don't want to". Of course there are an infinite number of other factors involved, especially when money is thrown into it, but this has been my experience when talking with people.