We do not have controlled inflation (I'm assuming you're talking about USistan). Please remember that the fed is an independent institution which refuses to get audited.
I am beyond sick of this Libertarian lie that has somehow gone mainstream. The Federal Reserve is audited bi-annually by both a public and private commission
In regards to your first point, inflation is targeted at ~2.5% a year. Some years do better and some do worse but on average that is the inflation rate. I challenge you to look at the inflation rates (provided below) in the first half of last century and provide a reasoned argument for why having years with +16% inflation (and years with -10% inflation) is a better system of currency than what we have now where people freak out if the deviation is over 2%. The gold standard provided a volatility that only hurt those with less money, and the argument your making is a fallacy (and is the reason I left the Libertarian party four years ago.)
(Also, I recommend you quit it with the "USistan" stuff. It comes off as childish and detracts from the point you're making.)
[0] Maybe "strongly influenced" is a better framing when talking about the Fed.