These weeks the bitcoin prices are so volatile, we do not need to worry about it. Therefore we should be able to think positively following the trend that bitcoin will not be getting smaller the selling price but will increase.
On the other hand there are some other competitors or cryptocurrencies being bitcoin competitors such as etherium, doge, litecoin and others that we should take, as a reserve currency. At any time there may be a shift in the value of bitcoin currencies lost to etherium.