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.
Indeed, it is controlled by the government, These central banks have massive lendings from the government, which are already impossible to pay back, so therefor at some day the bubble is going to burst, and some currencies are going to drop a hell of a lot, take for example the central bank of europe, where draghi is pumping out millions of euro's every day. The EU already has a debt of 11.656.129.521.903EUR