by quartz: http://qz.com/498951/why-work-a-psychologist-explains-the-deeper-meaning-of-your-daily-grind/
The Crucial Question
Why do we work? Why do we drag ourselves out of bed every morning instead of living lives composed of one pleasure-filled adventure after another? What a silly question. We work because we have to make a living. Sure, but is that it? Of course not. When you ask people who are fulfilled by their work why they do the work they do, money almost never comes up. The list of non-monetary reasons people give for doing their work is long and compelling.