As of September 2018, the combined government, household, and business debt in the U.S. was approximately $50.7 trillion.1 Written out that looks like this: $50,700,000,000,000. Interest in one form or another is being paid on all of it all the time.
Since the beginning of modern banking, countries throughout the world have experienced economy-wide boom and bust cycles and repeated banking crises. The first bank panic in the U.S. was in 1792, only sixteen years after the signing of the Declaration of Independence.
Government and financial bodies throughout the world habitually set targets for their economies to grow. Did you ever wonder how long national economies can go on growing on this one finite planet? If an economy grows at 2% per year, it will double in 35 years.