I enjoy my work. It's not particularly rewarding, it's not very prestigious or anything, but it suits me. I still want to retire, and fast. The author's premise seems to rest on the fact that "work" (dreaded four letter word-gasp!) isn't particularly enjoyable, and that's why we all want to retire early. For a lot of us that's true, as not all of us can be star baseball players, or scientists curing the next disease that hits us, or writing articles on the internet. Yes we should all try enjoying our jobs and integrating it into our lives best we can, but damn out of 300 million or so Americans here, we all can't have that luxury.
Work is an exchange. My time, energy, and mind are exchanged for money from a company. I'd rather have the other side of the exchange be something a little more worthwhile to me. Time with my friends and family, putting my own ideas to fruition, etc. If I want to slave away at something, I want the results and rewards to be all mine.