Bitcoins are much faster than any other fiat currency. When it comes to speed, the fiat currency system is nowhere near the promptness of Bitcoin. Whenever you need to exchange from one fiat currency to another or to make a transaction, the wait is sometimes unbearable. In the era of speed and precision, you can either get through the banks, their questions (not to mention their fees) and wait an eternity for their approval, or you can just use Bitcoin to transfer millions of dollars, for negligible fees, in a matter of seconds.