The world is quickly growing tired of the current economic system. As you rightly point out, terms like GDP, which are so freely thrown around to justify economic decisions or point out their successes, are insufficient and outdated.

In the post-depression and baby boomer generations people simply wanted to know that enough money was being made - thus quantitative measurements like GDP worked for them. Today's information generation wants a qualitative measurement - they want to know whether that money is coming from good or bad sources, and going towards worthy or unworthy recipients. Thanks to banks and governments, the flow of fiat currency is all too often shrouded in so much secrecy that this becomes impossible.

This is why blockchain technology is so popular with the switched-on generation of today, and it's why cryptocurrencies are the future. Finally, we have a totally transparent, decentralized record of every transaction ever made that's built right into the currencies themselves.

Psychologically speaking, I can only imagine that the more people have knowledge (and therefore, power) of a currency and its use, the more they will want to use it themselves. A new crypto-based economy is already here, and people are making millions off it right here and now. As soon as it really takes hold of the public consciousness (and Steemit, as a blockchain-based social network, is by far the best means we've ever had of making that happen), governments, banks, corporations, retailers - basically everyone who uses money - will either have to get on board, or get left behind. Gold simply isn't as shiny as it used to be.