Did Virtual currencies can affect to Local currencies?
How come did local currencies benefited to virtual currency?

For me Virtual currencies are very helpful to people now a days especially to online world. We can easily pay online when we buy clothing, furniture, gadgets and even online gaming by using virtual terminal.
How can local currencies benefited to cryptocurrencies? By using cryptocurrencies to buy anything online the local benefited it by doing the exchange. Now a days many people do online payments using cryptocurrencies so instead using local currencies, they do exchange the local currencies to virtual currencies for easy process.
Cryptocurrencies are very helpful to people now a days.