Ok. So there is a finite amount of the currency on the internet, somewhere. But where does that come from. Can I just invent my own and put 10 trillion there? What is it backed by? I get that central banks do this, but they are backing it, and a stable country most likely gonna be around for a long time.
Get it on diamonds and gold, but l can hold that in my hand. This is a much more trust thing that it really is there, somewhere.
Also, seems daft that there are several versions invented by speculators. A one world currency for trade would be good, but this is very volatile and, as it stands, like a pyramid scheme, where everyone buying is relying on the next wave of people buying it from them for more.