Will 21 million bitcoins be enough? Completely. Such a limited amount is made for that. so that over time the price of its hundred millionth part - Satoshi - grew. Already, there are many other good coins for use as a means of payment. Bitcoin, apparently, will be used more as a means of accumulating value, and with it we will still have problems in connection with this. He will sometimes take off in price and also sometimes fall quickly. In relation to him, we will see in full force what is the large volatility of the crypto currency.