Here, Warren Buffet says, "Most of the managers at Berkshire have “… no financial need to work” - this simply means that the people who are working are working because they love working."
http://www.pluggd.in/2008/03/startup-entrepreneurial-lessson...
In this one, pg says that if someone gave him $1 billion, he'd still be doing "much the same thing".
http://news.ycombinator.com/item?id=79057
So my question is this. If you love what you're doing, why would you want to do it LESS? And if you don't love what you're doing, then why are you doing it?