The cryptocurrencies will not losing their appeal as long we can still make profit from cryptos even the market is not good condition.. About crypto money in the future, of course bitcoin is the future.. Other cryptos that can be popular? I guess it would be Matic because of the cheapest transaction fees and also fast transaction, it will popular in the future.
It's not only matic that's going to be popular in the future. There are many of them but many of them would be gone eventually as well. Just like every ATH.
There's a highlight for those altcoins that have been moving upwards and there are those that becomes totally unknown and almost not active anymore after it had pumped.
This is the normal thing in the market, we don't know if a popular altcoin today could die off and become unpopular by the next years.