When businesses borrow to start producing, when they do so they have to charge a price for their products that covers the interest on their borrowings. This means they are charging more for their stuff than they are paying out to their workers. So there is always a perpetual shortage of buying power. So consumers also have to borrow in order to purchase what they need. This creates a continually-growing pool of debt, which makes it necessary for the economy to keep growing more and more which produces pollution and exhaustion of materials. It also guarantees that some industries will have to go bankrupt as the demands for their products falls. So we are condemned, by the continual creation of debt, to work longer and longer hours, have less and less time for our families, and endanger the planet's environment.
We need a different system, where the increasing productiveness of modern industry enables us to work LESS hours and use things up less fervidly.