The people in mud huts have stayed close to their Buddha nature. I know it seems like hokey, new-age stuff, but I really believe that when we get away from our essential nature, things go wrong.
When Africans were brought to America to be slaves, they were separated from their Buddha nature. When whites colonized Africa, they subjugated the indigenous people and separated them from their Buddha nature.
I am not going to go into a long diatribe on the topic of the ramifications of these departures from their Buddha nature. Rather, I think it's worth noting that the separation is a problem.
This plays out in smaller ways as well. For instance, I know some formerly married couples who are now divorced. In most cases, we outside observers thought they were an odd match in one way or another. Essentially, we all saw a disconnect between each individual and who they were trying to be. Most of these people have returned to type and are trying relationships that keep them closer to who they are at a basic level. This is a good thing.
The more we can understand ourselves and strive for careers and relationships that are consistent with who we are at a very elemental level, the more we can make good, stable situations for ourselves.