If everyone did that... well what would it be like?
I still treat myself as a free agent when I work as a salaried employee for someone else. I am invested in what I do with my time and want to accomplish things like anyone else. I just don't find it very practical to put my wife and I through the stress of financial insecurity just so I can get a kick out of my day. That being said, I don't just work for anyone to get a paycheque (at least not anymore now that I have some years of experience behind me).
I prefer jobs where I'm treated as part of a team. I like to think that the company hired me because it found my skills and experiences useful to their goals. I'm also more likely to work for a company who is working on things I am interested in working on.
Some people though; they take any job they can get. They need the paycheque. You'll wear yourself in that kind of job. But sometimes it's unavoidable.
The only thing I don't like about articles like this: the mention of the big-ass six-figure salary that they walked away from. If it wasn't about the money, then who are you trying to impress? "Hey guys, I could've bought a nice home in the hills and a lambourghini if I wanted to, but I'm way too cool for that." Give me a break.
I understand the pursuit of happiness and so the article wasn't a total loss of time. I just think he could've changed the headline to be more appropriate to what he was actually writing about. It's too sensationalist.