Have you done any reading or podcasts on crypto? I listened to a series a couple of years ago, and I learned a lot. Some of the uses of blockchain technology are decentralized finance, smart contracts, international currency transaction, verification of luxury items, web hosting/ design, several healthcare applications (insurance verification, payment, cloud EHR storage, etc), NFT design/marketing/trade, . . .
Once I really dove in, there's some incredible stuff out there and much, much more in the works. I was an admitted skeptic, but I have warmed considerably on the futures of crypto and blockchain.