I'm inspired by alternate modes of data storage and compute, and blockchain gets points for popularizing public key pairs as a means of committing transactions, but I totally understand the hate: whenever a tool is invented, it makes certain things easier than they used to be, sometimes unintentionally. Merkle trees make verifying data integrity fast, and proof of work was invented to make sending spam emails slow. The two combined with a money-metaphor makes spinning up pyramid schemes zero marginal cost. Whether or not you're on board with Mr Nakamoto's banking critiques, the result of the technology has been a tidal wave of thin schemes defrauding hopeful and desperate people, while adding little value outside of that world.