Crypto is rebuilding the same things that already exist but that process has the chance to remove people from a system who used to provide services and replace them with an algorithm. Most people would dimiss a NFT but some of the use cases could be great. If most laws/rules were enforced in code for business transactions would you need to spend as much money on a lawyer in your lifetime? That's the future of money and it's exciting. Will that happen? Maybe not, which is why it is speculative.
The problem is that a large majority of people who are speculative and most crypto assets are highly centralized, which defeat the point of decentralization to remove a few large actors from having control. Plus the scams and idiots in the space that income without labor always attracts.