Yes it is, digital currency now becoming the new face of payment and in the future for sure.
Actually, people already used digital money as method of payment since we use credit card or something similar to, at least no money show up in transaction unless you are going to bank and pay it. Whatever, the idea is to make any transaction but you shouldn't have bring money, so was bitcoin invented but more better than banks system. We all already know why, bitcoin has so many advantages than paper money.
The paper money is losing participation on transactions even more. People are doing digital transactions a lot. That is why I believe Bitcoin will be the future currency. It's an easy system to pay for anything everywhere with low fees.
The negative point in my opinion is the safe when using crypto-currencies. Local currencies and banks are still safest to store money than Bitcoin wallets, doesn't matter the wallet kind. For the future, it must be upgrated.