Bitcoin is just a currency like all others, just the transaction fee, and slow transaction sometimes, there is no difference with other currencies.
Why do peoples use Bitcoin?
Bitcoin will change what in currencies world?
There is a difference and it`s not only one.
Transaction fees are smaller.
Transactions are irreversible.
Bitcoin is more anonymous.
Bitcoin price is more volatile,which makes btc a good investment.
And yes,those advantages can be flaws.It depends of the situation.