No "expert" can't know for sure. But i believe that crypto currencies have a future. Many projects will die i guess, but BTC should stay. New things will come and i believe quantum computing will change crypto much more, and it will be great. Now the price... i don't really work with crypto just because of to get rich. They have some other values for me and for many people, and i will continue to use them even if the fall really hard. I used btc when dropped for 90%, and im using it now. Last year, at this time, it was around 1k-1.5k That was huge, now when it dropped to 6-7k, everyone panics "btc failed, it worth it only 6-7k". But 6-7k is great price,say what ever you want. People just need to learn how to look at those things... of course, for those who take loans will panic, but it's their fault. New money is here, it's time for change and it will happen. Maybe not btc, but some bank alternative, XRP is example, it's a shit coin, but one that will be like xrp is the future for sure.