According to Warren Buffet, cryptocurrencies are bound to have a tragic and bad ending. This suggests that a great majority of cryptocurrency owners will end up losing everything that they had acquired in the form of digital cash over the years due to a rapid decline in the price.
Warren Buffet is the CEO of Berkshire Hathaway and is a billionaire investor. Hence, it is obvious that he is no newbie so whatever he says could have some wisdom. However, there is no clear reason why cryptocurrencies might fail so we cannot really presume the future of cryptocurrencies just as yet.