If Pi = $10, I know people who will quit their jobs. If Pi = $100, whole villages will quit jobs. What happens to economy if Pi makes everyone quit? Is that good or dangerous?

Definitely a good thing. This is how people should be: having both money and free time is what life is really about. They won't engage in speculation or harm their fellow countrymen. Money truly becomes a tool, rather than the money people need for basic necessities and emergencies