Here, let me try, because fiat currency actually is wonderful when you think about it. It is remarkably stable over the short to mid term;.
If by short you mean couple of hours and midterm is a day.
Just ask Argentinians, Russians, former Yugoslavians, Zimbabweans and the list goes on how stable it is.
https://www.munknee.com/21-countries-have-experienced-hyperinflation-in-last-25-years-is-the-u-s-next/I remember my parents exchanging salaries immediately after receiving them for Deutschmarks in late 1980's because our currency was so stable that it wasn't insignificant whether you received your paycheck at 9.00am or 11.00am.
Germans in Weimar Republic used to order a meal that took shorter time to cook in a restaurant because if they ordered a meal that took longer to cook they carried a risk of running out of cash by the time the dinner was cooked due to rising prices.
The fact that you as American haven't experienced hyperinflation makes you blind to it. Don't worry you will. It's a mathematical certainty.
So, it is a fantastic unit of account.
So is anything else, what's the difference in having a balance sheet read +100 US$, +100 BTC, +100 Khs or +100 bottles of grog?
Fiat money can be completely anonymous if you want
Yeah until you don't raise red flags for dealing with exorbitant amounts of money like depositing 5000$ in a bank and having to file a bunch of papers or having to declare that you carry mind-boggling 10.000 Euros across the border.
and it is reasonably easy to store and secure.
Not true, physical storage of money is expensive, moving it around is expensive. Way more then moving or storing cryptos.
some of them are even instant and offer you insurance and consumer protection.
I'll give you that.
If you store your money in a bank, at least in the US and the eurozone it will be insured by the government!
I would also gladly store your bitcoins if in case of me losing them I had the options to 1. create new bitcoins, or 2. steal them from some uninvolved, undeserving party.
There are brands of fiat money like the US Dollar and the Euro that are traded worldwide and you can buy almost ANYTHING with them, at any time.
If you traveled around then you know that buying anything, anywhere comes with a quite steep fee.
You can convert them into stores of values if you don't want to spend anytime soon.
You shot yourself in the foot. If you treat money as a store of value there should be no need to convert US$ or EUR 'into store of value'. The very fact that it's not a store of value means it's lousy as a money.
A person in 1813 had a luxury of burying a gold bar in the backyard and unearthing it 100 years later and still buy roughly the same stuff.
We live in a world where burying something like a dollar in 1913 would be dug out as 3 cents in 2013.
