NIST's answer to “Do you need a blockchain?” (2018)

Seems very reasonable to me. It captures what blockchains provide over a more typical database-backed solution.

It turns out though, that not many problems need their solutions to have all of these qualities, making blockchains largely a solution in search of a problem.

I can't tell if the flowchart is a joke, but I enjoy how 5 out of 6 answers (with the 6th being... email lol) recommends using a database.