On the contrary, everyone does use this capability. It is what makes the concept of "retirement" possible.

You borrow money when you are young and do not have much of value to contribute to society (for education, for purchasing a home, maybe for starting other ventures), you earn money during your productive years to pay those loans back and accumulate wealth (in personal or government retirement accounts, in Social Security or other government plans, in a pension), and at some point you are able to invest or lend or that money to others (or have others do so for you in the case of things like pension funds) and live off of the return, hopefully before you become so infirm you are no longer able to work.

I hope we can agree that allowing people to retire before they die is a net benefit to society. Claiming anyone can do that while they are still young with no risk is where you should start to get suspicious. Why should it be easy to get rich?