Yes, I believe in cryptoval. I have a lot of coins, one for quick profit, the other for long-term investment. Maybe not all currencies will survive, but I believe that the blockchain technology is the future.
It is impossible that all cryptocurrencies survive especially when so many of them are just trash, there are many articles describing that about 90% of the coins fail after only one year but the reason we still have so many coins in the market is that for every coin that fails there are another two ready to take its place, but that is not important what it is important is that the blockchain and bitcoin survive and they will do.