sorry, it seems that people use bitcoin because they choose the best way in the present and the future according to their speculation, for people who are information literate, on economic development, bitcoin be an option to be a safe means or storage for the future, because it can not be denied, today must be ready because the more advanced times, prices, exchange rates on the market the more expensive, more sophisticated technology. everyone does not want to be left behind. so bitcoin as an appropriate solution, fast, easy, efficient and practical and profitable to invest.