>Bitcoin is digital gold, even if economists hate it. Humans around the world started believing in a deflationary currency.
>Centralized non-stable coins took advantage of noobs that didn't understand the purpose of blockchain was to be decentralized.
>Smart coins failed to scale, and might be seeing their end. POS and DAG are untested solutions that might provide a future, but it will be years before people trust it.
>Stable coins are centralized, but provide the ability to transfer assets with limited costs. These will require centralization
>Fast/cheap/privacy coins are looking to beat bitcoin at moving money.
That said, just because a crypto is useful, doesnt mean that it will grow in value. The value may be using the coin rather than holding the coin.