Nothing is permanent in real world if there is something that exists then it will also end some days and same goes with bitcoin too, and no one can predict what will exactly happen in future.
Yes all possibilities can happen, bitcoin might be able to disappear in my opinion. If bitcoin left behind and the price has no value bitcoin will definitely be left behind and will slowly disappear. But if bitcoin grow and increase surely will continue to exist. It all depends on the circumstances bitcoin from time to time, and no one can be sure exactly.
We As kind users of bitcoin we should keep bitcoin exists in this Cryptocurrency world. How the users of bitcoin treat bitcoin and how effort for bitcoin to stay exists.
I can not decide that bitcoin will disappear or not in the future because it depends from many things . I hope that's will not happen because bitcoin gave me so many benefits.
as long as there is demand for a currency/investment tool such as bitcoin, then we can enjoy seeing the price go up and down and make profits as we are used to. i personally think that the store of value aspect that bitcoin offers will attract much more people to bitcoin than we can realize in the future. who doesn't want financial freedom? bitcoin can give people exactly that.