This is matter of two different opinion but both have good background to support all this.
Many consider crypto to be maybe next crisis point in next few year (mainly i think on major banks or bank group in general), why they dont trust it but yet so many other people does and as such many invest fortune in crypto in general that can be latter returned in 10 or more times if they have time to wait and play on long runs.
Then what is bad here.
Risks of crypto currency is very much consider as treat in many countries and as such we saw that many ban it or they dont want to have anything with it. People want to get richer, which was, after all, the cause and the previous big financial crises. Guided by the desire to become even richer, they become less rational, buy and what they do not need. And when you're still speculating, and that's trading in crypts, the risk of losing is higher. Human behavior is based on thinking that we are rational, and in fact we are not.
So in the end we come to one single point if we want something we will create that something, so if many want to money disappear we could accomplish this but think it wont be a option for anyone.