The famed Keynes biographer, Robert Skidelsky (The Right Honourable Lord), has an intriguing book with his son, Edward Skidelsky: How Much Is Enough? Money and the Good Life.
Starting point is an essay by Keynes from 1930, Economic Possibilities for Our Grandchildren, in which Keynes predicted that 100 years from then, economic progress would have improved productivity and real incomes so much that everyone (in the developed world) would only have to work 2 days a week and be free to enjoy their leisure otherwise.
Now, it's still a few years until 2030, but it doesn't really look like that prediction will come true - and the book is an examination on why.
Makes you think. (And sleep. And take time off :-)
http://www.nytimes.com/2012/08/19/books/review/how-much-is-e...