The natural state of mankind is that we inevitably get better and better at creating all the things we create getting more effective and efficient at creation. Therefore creating more and more which in turn drives prices DOWN. this downward price move ( like you see in electronics, cell phones, Tvs etc) helps MORE people afford them AND we can sell more this also means your money can BUY more things. Which by proxy means its getting worth more over time as the increase in productivity creates this DEFLATION.
Now our current currency we have people making more of it which in turn makes the prices of EVERYTHING go UP! ( Electronics have increased at such an exponential rate that they still go DOWN even tho prices of everything else is going up) this creates INFLATION which is essentially government stealing a little bit from every single dollar holder in the world all at once. So you can see how this system is one so entrenched anyone controlling it would never give it up. Its like have an unlimited credit card you NEVER have to pay back.