Agree. In addition, one of the purpose of Bitcoin is to have a universal currency. It can be used for any transactions but it will still be the traditional currencies that business would prefer as it is less volatile. Also, as stated above, traditional currencies are being run by the government where in businesses are registered in. No country will prefer to have this as a main form of transactions.
I believe that the Bitcoin is still growing and can really affect the currency market in the future. Many people are still skeptical about it. The more it grows the more people will be more confident about it in the future to use it in different transactions.