For an example, just look at the people who never left your hometown compared to the ones who went and made a life for themselves. It's pretty miserable and depressing to see grown adults trapped as the same person they were in high school.

Can confirm. Grew up in a small oilfield town in Texas and could not get out of there fast enough. Most (not all obviously) of my high school peers that I kept contact with that never left did not fair as well as I did.