Like all digital technology, it is unquestionable that sooner or later bitcoin will have to be replaced by a superior technology, just as in the past we saw many devices become obsolete when at the time seemed insurmountable, such as CDs or PCs.
Obviously this will happen in a gradual way, but I do not believe that bitcoin can retain its current dominance for more than ten years before starting to fall into disuse, although perhaps its influence could persist in the market about ten years.
In the end, bitcoin is likely to subsist for many years, but by then it will have evolved in such a way that it will be virtually unrecognizable for todays standards, and in fact it is difficult that in 15 years there is something similar to the current cryptocurrencies before the spectacular advances in digital technology that are approaching.
Maybe for you mate bitcoin will not last forever, but for bitcoin fanatic of course they will hold to this belief.
as long as that there is a users who continued patronizing its features for sure it will survive for a years. And we cannot say what will happen
tomorrow, and also the market was very unpredictable too.