We bought Detroit because even after buying ourselves new houses and cars, $253 million in lottery winnings left the four of us with a ton of leftover cash. Why specifically? One of our daughters found the ad on Craigslist: One city for sale or rent—slightly used; a fixer-upper; free from most city noise; lots of pretty, healthy trees and grass. The asking price wasn’t ridiculous.The mayor took personal checks. We wanted to be the first people who’d ever bought a city. Sure, important people sometimes got keys to them, but that’s not the same thing.