Cryptocurrency is a fake money

Cryptocurrency is a fake money. You cannot even buy a Big Mac with it. You cannot pay tax with it. You cannot buy a thing! If you cannot use it to buy daily needs, it is not currency. People buy cryptocurrency for speculation only, not for using it as currency, hoping one day they get larger amount of dollars. But that happens only late comers pitch in more money, believing they too may get more money one day. It is a Ponzi scheme. It is a bubble. It is a fake.