Speaking of fairytales, you're living in your own.
Disconnecting value from productivity sounds good if you don't examine any of the consequences.
Can you build a society from scratch using that principle? If you can't then why would it work on an already built society?
Like if we're in an airplane flying, what you're saying is the equivalent getting rid of the wings because they're blocking your view. We're so high in the sky we'd have a lot of altitude to work with, right?