In my opinion, I think that the only ones prone to survive would be good old altcoins such as Litecoin and Dogecoin, but I may be wrong.
Nevertheless, I would like to know your opinion about this as well as any altcoin that might be worth holding onto for the long term.
There are few altcoins that might survive in the future, such as the pioneering old altcoin like dogecoin and litecoin, even the Monero, ethereum, nem or wbb have a bright future in my perception and understanding only, though we had our own privilege to express our own choice altcoin.