I'm of the opinion that the root of the problem is inflation (but I'm open to correction). My thinking is that we're constantly being pushed to work harder because no business today can reach a successful steady-state -- it must keep growing. The reason businesses must keep growing is that investors demand it. Investors demand it because they believe that wealth sitting around not making more wealth is a waste. Infla…
Add to this the fact that deflating currency makes loans hard to service and biases the lending market toward default. This further decreases the incentive for those with a lot of currency to lend it since the probability of losing it to default becomes higher.
The ideal is probably a little bit of inflation. I think it's possible that we have too much, and that we are misinformed about that because we are measuring the wrong things. I'm not positive but I seem to remember that the CPI does not include things like rent and college tuition, which if true is utterly insane and makes it a bogus statistic.