Who stays behind central banks? What is your opinion?
If you are implying that governments control central banks, that is correct. While central banks are theoretically supposed to be independent, very few central bank governors can survive in their posts if they don't have the support of the government.
Even central banks work independently, who are they to print and issue money ?
Apparently we are told that they reserve gold and issue money, but how they do get gold ? Seems a basic contradictory in our economy structure.
It is true, without reasons we trust our money/central bank/government for saving our wealth.