My investment in crypto is centered on the idea that eventually one of these will actually be used as currency. I.e. You can actually buy things with it. I could be wrong and the US government could make sure that never happens.
Right now they are just hype machines that store value in a volatile way. That may not be sustainable. I think in the next 10 years one of these coins will be used commercially and the rest will go to zero. Dozens of coins aren't going to exist if we ever get to the point of seriously using decentralized currency in transactions.