The Catholic Church’s restrictions on usury are rooted in Aristotelian philosophy. Aristotle taught, as you have demonstrated, that money is sterile, and has no value, and, therefore, money being used to create more money, not only runs contrary to Natural Law, but is ultimately detrimental to the Common Good. The value of products and services in the marketplace should be grounded in human labor. The history of capitalism can best be described as a conflict between labor and usury.