For me, what makes Bitcoin's price change more than traditional currencies is due to it's limited or fixed supply and increasing of enthusiasts and investors. It could possibly be a factor wherein Bitcoin is decentralized. I think high volatility of a traditional currency is not that good for every economy as loss might happen in just a matter of seconds on any businesses. Local fiat currencies are I think made just to be a stable currency by governments who has a full control to avoid any conflict regarding a sudden rise or fall because it might cause bankruptcy and will make a country's economy to something like "crash".