What will happen to the price of bitcoin, when it will be extracted all 21 million, this has always been a contentious issue. Many say that its price will rise, as its offer will be severely limited. However, the question arises: who will need a very high cost bitcoin, if by that time there will be many promising digital coins of low value that will yield a much larger profit than bitcoin? Do not forget about the volatility of bitcoin, which is likely to be even higher than now. If bitcoin will fall by 40-60 percent in its value, then someday it can provoke a big panic and bitcoin in a short time simply depreciate. Are investors ready to invest large sums in bitcoin, then to worry about its course?