How will this affect our hobby?
Will our collections be worthless from a face value standpoint?
Will our collections be worth more?
Actually, these questions are questions I too was curious about, but not in the sense that the currency would change, but rather what if banknotes are no longer issued. We have credit cards, debit cards, and from talking to many bank employees, cash is becoming less and less used. This is one of the reasons that many banks don't carry the amounts of cash they once use to because less people are using it.
So do our collections still have the value they once did