Govs must  dilute the currencies to pay subsidies  to farmers , and miners and any other commodities ... plus they need to pay for  the defence ..  law and order  .. 

In a scarce fixed supply monetary system - no rational person will work on mass production - it doesn't make sense because the value is attached to scarcity  .. 

That said - are govs free from mismanagement or vested interest - of course no ... there is always room for improvement .. but that improvement is NOT going back to Gold or going forward to Bitcoin  alone  .. 

Currencies and  Money are two wheels of  the system  -   we need both  ..  

 In fact Tax is bad .. because it is essentially wealth redistribution ... as in tax those who work hard and give to those who dont  .. on the other side printing the currencies devaluates proportionally ..  most appropriate thing to do for supporting commodities and defence ..  most of mismanagement will disappear if govs stop taxing and openly share  policies to print more currency ..