You mentioned harvesting metals out of meteors so I took you at face value on that word. Point is that it's more about efficient use of labor and capital. And we still have a long way to go in realms of automation technology, energy tech, virtual reality, finance, biotech, medicine, space tech and countless products and services that will continue to grow the economy for decades if not centuries to come. That being said, a recession will happen at some point. Difficult to speculate as to when, my guess is that if we are, it won't be a deep one.

M1 money supply is not typically used as a measure of economic growth. Money supply can increase while the economy is tanking (see Venezuela). Real gdp or other similar figures are typically used.