Bitcoin has been created to be a currency. But what is happening now is completely normal.  I mean the price rise is inevitable and we cannot claim those who are trying to use this opportunity. Assume that bitcoin price was 1 dollar when it was created and it is now 1 dollar now. The total market cap is only 21 million dollar. Can it be a global currency? Bitcoin needs to have more market capitalization to become a global currency. As the total supply is limited, so the price must rise to reach that goal.