Cryptos are hot now thats a fact, but it they will stay it depends if they can stay indpeendent from manipulation especially external. Such as government regulation attempts and things of that nature. Also bad press might have and effect in the long term, but who knows. Cryptos threaten establishment and the controlled systems because essentially they are rigged and manipulated, cryptos such as bitcoin aren't which is what worries them to have a whole new currency that cannot be controlled by them especially the government who will miss their piece of the pie. Ill have to look into quantum computers and give you my thoughts another time.