Theres no proof that theory is valid though, big bang is a myth. There are quasars with massive red shift in front of nearby galaxies.
There has never been a paper / fiat currency which didn't eventually fail. The average fiat lifespan is 30-50 years before it hyper-inflates and go bust. (exact average depends which source you believe - google it).
The US Dollar is overdue. And in the long term that will also be worth 0 whatever else (Yuan, Euro, Shells, BTC?)
So what exactly was OP's point here? Yeah - all currencies eventually go to 0. Civilizations come and go. Does it mean we should just abandon the whole concept of money and return to barter?