There's this (mediocre) NYT article about Iten, Kenya's running town:
And there's this doc about Bekoji, Ethiopia's analog:
I found the Iten article's quotes about Kenyans running because they want money pretty interesting. It's exactly the opposite of why I run, but of course my parents weren't subsistence farmers, and I didn't go hungry during dry seasons as a kid. Nor was I a poor urban minority in the US playing basketball for a way out, if that's a fair comparison. I wonder if any of those circumstances make the sport more or less fun. Fun probably isn't the right word, because to be seriously good at a sport you have to work hard, which I haven't done for sports in quite a while, possibly ever. Maybe emotionally fulfilling or rewarding is the right word.