Memes

Didn't I say "admirable future goal" rather than "good idea right now"? Eventually, society ought to progress to the point where money is no longer needed, through both development of productive forces and development of societal attitudes. This is the goal of communism. The concept of money is only a few thousand years old, and humanity existed for hundreds of thousands of years longer than it, so it's by no means impossible.

Did you ever watch the Star Trek shows? The Federation in Star Trek doesn't have money. Both because they have replicators and can instantly reproduce any item using only energy, but also because they're a more advanced society that has moved beyond needing a medium of exchange