Yes, a big nightmare that is if you are not skillful enough to figure out things especially on how to take advantage of volatility to your side. Look, I am not a good trader myself but I know that successful traders are in fact making good money riding on volatility of an asset. Of course, to be successful, one must learn and must adopt effective strategies of good trading. Volatility is not actually the problem, it is the failure of a trader to position himself on the correct column. Volatility can be a good friend if you know how to make it one...into your profit margin. Otherwise, nobody would be left trading in the market as an effect but since there are still so many traders globally on cryptocurrency then volatility is not something they are afraid of...but maybe we who are newbies may look at it like a monster.