I think electronic cash such as Bitcoin indeed has value. A decentralized world computer such as Ethereum imo can also have tremendous value, but NFTs are.. pretty dumb. The ecosystem is still in its infancy. Whenever a new technology appears, it takes a while for people to discover good use cases. This process involves a lot of trial and error. I believe most crypto projects out there today will be dead within a few years. Similar to what happened with the internet around the dot-com bubble.