So, why do we need to use Bitcoin???
Its will make you get more control of your money. You don't have to pay tax to government. There are more benefit if you use bitcoin. Use paper money is terrible.
These are the most common reasons to use BTC but there are more as well.You don't have to rely on the economy to keep your currency stable and in case of a financial crisis you can turn to BTC as a way to escape the cataclism and protect yourself.I think that's the biggest advantage BTC has-it is not regulated and there's almost no way there can be used artificial control over it.