Why would it be dead? There are needs it services better than any other current product, with no serious replacement in sight (except for alternative cryptocurrencies).
And at least the black market use case of bitcoin is really hard to replace with a better product. Not because Bitcoin is so great, but because it's politically and legally hard to develop a good product that works in a black market environment.
Bitcoin went from the "hype" stage to the "adoption" (although of the niche kind) stage with a couple of hyped spin-offs such as "blockchain everywhere" so it's less of a hyped up novelty more of a "fact of life" type thing now.
Adoption is still niche, there are technical issues to be taken care of and there are "existential" threats based on the uncertain legal implications but by and large both Bitcoin as "currency" and bitcoin as "p2p network" are doing ok as far as I'm concerned.