This article points out that the rich have less leisure time than the poor:
Being rich used to get you into the leisure class. Money meant freedom — from work, money worries, household chores and screaming kids (via boarding school).
Now, however, the wealthy seem to be as besieged as ever. The leisure class has given way to what I call the workaholic wealthy – an elite of blackberry-crazed, network-obsessed, paripatetic travelers who have to keep scrambling to maintain their place in life.
It's amazing, really - the human inability to find hapiness in this world. If you're poor, you're constantly stressing over money. If you're well-to-do... You're constantly stressing over money.