bitcoin becomes very expensive one of them is due to the limited amount of currency, in addition to his many ads in various social media that tells that bitcoin will be a global currency is a factor that makes bitcoin very expensive
Actually, bitcoin has limited supply and I think it is also the reason why it is so expensive. Furthermore, as of now the price of bitcoin was totally expensive and its keep on increasing and I hope it would increase because it may lead to a high income and more money.