Nature dictates that growth cannot long continue past the carrying capacity of the habitat. Economic models will have to eventually adjust themselves to that reality. A slow decline is far better than a sudden crash, as population adjustments go. But even the Black Death of medieval Europe led to the Enlightenment, due to the freeing up of resources that had previously been scarce. In the US, it will probably lead to higher wages, less housing shortages, and less severe environmental impacts than otherwise.