From an amazing article that you really must read, by David Kain, of Raptitude.com
The ultimate tool for corporations to sustain a culture of this sort is to develop the 40-hour workweek as the normal lifestyle. Under these working conditions people have to build a life in the evenings and on weekends. This arrangement makes us naturally more inclined to spend heavily on entertainment and conveniences because our free time is so scarce.
I’ve only been back at work for a few days, but already I’m noticing that the more wholesome activities are quickly dropping out of my life: walking, exercising, reading, meditating, and extra writing.
The one conspicuous similarity between these activities is that they cost little or no money, but they take time.
Suddenly I have a lot more money and a lot less time, which means I have a lot more in common with the typical working North American than I did a few months ago. While I was abroad I wouldn’t have thought twice about spending the day wandering through a national park or reading my book on the beach for a few hours. Now that kind of stuff feels like it’s out of the question. Doing either one would take most of one of my precious weekend days!