Bitcoin will remain and will not be lost. because bitcoin is the world's first digital asset and the world's first virtual currency, so bitcoin will remain forever. bitcoin can also be used as an investment tool or stock trading so bitcoin will last forever
Nobody can predict if how long it will last because bitcoin has a lot of disadvantages comparing to fiat however a lot of people still uses bitcoin as a part of the adaptation process because us, as bitcoin promoters our mission is to mass promote the bitcoin in order for a lot of people to mass adapt this currency.
I think that the peak of bitcoin's popularity has already passed. In 2018, everyone who wanted to get acquainted and try bitcoin for themselves has already done so and expect an even bigger wave after the one that was no longer worth it. The extent to which bitcoin is now widely used around the world in principle covers all the necessary need.
That is true. But I also want to believe that for as long as there are crypto enthusiasts, it will also stay long. I agree with the previous replies that pointed out the different features of Bitcoin, compare to other currencies, and why it is taken as an investment and not its primary function as a currency. Although many have really adopted cryptocurrencies today, I think it will take more time for everyone to acknowledge this currencies as part of ever-evolving society.