Well, the more others says that bitcoin is no longer a currency it became more a legal currency online and also became popular too. Look a the price value of bitcoin at the present time now it is almost 1700$ each bitcoin. The demand was getting higher more and more and many businesses too are also adopting the concept of bitcoin.
Bitcoin is more than a currency, bitcoin has risen to an asset for one's investment, because many people get big profits from current price spike. Demand for bitcoin is increasing, giving extra benefits to bitcoin owners who hold it.
Well, if bitcoin is not considered a currency, then it is considered a good asset for the future which is constantly growing rapidly.