Then--and here's the point--somewhere in our 30s, we refuse all further change. The purest coincidence got us to where we live. The merest fluke put us in the present job. Now other parts of the world may beckon, other jobs may offer more. No matter. However capriciously we got to where we are, even if simply because our car broke down, we insist on staying there. Further change has become out of the question, no matter how miserable we are.
This behavior has always mystified me. I'm a fan of capitalism and freedom. Capitalism assumes that if you're unhappy with what you're doing, you'll change.
But that's not how the world works. If people are unhappy with their jobs, they agitate, join a union, go on strike, lobby for political change, maybe blow up the workplace. But most never even consider changing jobs.
Similarly, when the landlord raises the rent, people vote for rent control, or sue, or withhold payment, or seek help from city hall.
But most people never consider moving.