My home town has a beef packing plant. The work is hard, repetitive, injury-prone, hot or cold climates, and thankless. It's hard to imagine an eight-year old saying: "I want to be a beef plant worker like my dad."
An underlying motivation for scientists is that they really don't want occupations like beef plant workers. So they will contort the principles of science to ensure they don't end up in a line position in a factory like this.
A year ago, I put up a review of a book called "Manna". This book discusses two paths society can take as automation puts more and more people out of work. In the second path, citizens will have the freedom to be scientists and conduct science from more pure principles.