The only thing most people want from cryptocurrencies is more USD than they put in.
Editted to better represent reality.
A lot of very smart people care passionately about decentralization and the technology is going to change a lot of things. It seems like from your post history you're going to have to be dragged kicking and screaming into the future.
Bitcoin itself is 9 years old. Ethereum is barely 3 years old. Meanwhile, people are building decentralized trading platforms, prediction markets, provably fair online casinos, an entirely new venture funding model has been created, crypto collateralized loans, virtual assets trading, IOT-based supply chain management, and so much more. You'd realize that if you looked past the memes, there's something there, it's still very early, but it's growing rapidly.