I have a friend that grew up, went to college, went to law school all within 20 miles of his hometown. As soon as he graduated law school, he got married and started talking about having kids. That was a few years ago, but he was basically 45 and settled into his suburban life at the age of 24.
1. People who don't travel because they can't afford it 2. People who don't travel because they're intimidated by it 3. People who don't travel because they don't see it as important
These groups definitely have some overlap -- you may not be able to afford it because you don't prioritize it -- but I think most people wouldn't self-identify as being part of Group 3.
What I meant was many people jumped to say it was only money that caused people not to travel. Everyone knows a friend like mine. I have no idea of the breakdown, but my personal experience makes me want to question the idea it’s always all money.