Product with no real use case scenario would fail eventually but through the years bitcoin already have market and adaption so as long as institution adapt it as form or payment and users trust and government regulate or adopt it, it will continue. FIAT started the same it started with the trust in every country to accept the currency of other countries. In my opinion since it is widely adopted now it will stay but when users/people lost it trust for bitcoin then that will be the end of it. You can ride the hype in trading and always have fall back options.