Most people don’t play plumber as children, and unless they happen to be born into a family business, they probably don’t imagine growing up to be a plumber, because it’s not exactly the most glamorous business in the world, compared to an astronaut or pro athlete. But, as any grown-up who’s had a plumbing emergency will tell you, plumbers can command a premium for their services. Not to mention the fact that no matter how advanced that we get as a civilization, we will probably never find a better way to deliver water to homes or business, or carry away waste.