Work is Overrated

Having a job gives one a handy response when people ask you "what do you do?" and the biweekly paychecks certainly come in handy, but other than that, isn't gainful employment a bit overrated? First of all, who decided that the ratio of work days to play days should be 5 versus 2? If you were drawing up plans for a perfect world, is this the formula you would use?