Cryptocurrency is an absolute risk. And whether it will be useful, it depends on many factors. It depends on the situation on the market, on your literacy. You must correctly form your crypto-currency portfolio. But even this does not guarantee success on the stock exchange. For example, now we do not see a profit, because bitcoin and altcoins are at the bottom.
To take benefits in cryptocurrencies we need to face risks because there's no business that don't have risks this is an investment technology in where it depends the fluctuation in the market wether decreases or increases but surely this is a good opportunity for us because the lower or higher amount we invest the higher returned of profit.