Jeffrey Dorfman, an economics professor at the University of Georgia, sees bitcoin as an asset rather than a currency. Writing in Forbes that value of the cryptocurrency increased 140% in 2016 and 49% in the past month, Dorfman maintains the swings in either an upward or downward direction do not make bitcoin a plausible currency as much as a speculative asset.
Bitcoin does not make a good currency for two key reasons: its unstable value and its slow transaction time.
Dorfman claims the most important feature a currency has is being a stable store of value. This factor is important to a developing economy trying to attract investment. It is also important for developed countries to allow investors to earn the returns they expect on investments. An unstable currency makes it difficult for investors to predict the value of future earnings.
Because uncertainty makes investments less valuable, less investment occurs.