It's really just a simple waiting game. There is a strong need for a world reserve currency (currently filled by USD, and somewhat my EUR). Fiat currencies have a 100% failure rate
No they don't.
There are many many fiat currencies currently in existence, and those haven't failed.
Interesting logic, but I'm going to have to disagree with it.
Do you also believe that some people may live forever because some people are still alive now?
I think it's safe to say that, like humans, all fiat currencies eventually die.