Mentioning altcoins useless in the future is too early, the truth is that there are some merchants that accept payments with altcoins. The agency accepts altcoins for contribution payments, not to mention. And I think that in the future altcoins will be useful. Sure, 90% of altcoins are useless, I must say, but there are still about 10% of altcoins that can be useful. Especially in the future, there will be more countries legalising cryptocurrency, increasingly visible is the role of altcoins