For code libraries, if you start a sentence with “I've never used x, but I don't understand why anyone would use x — it isn't that hard.”
1. Maybe try x first?
2. Realize that the same could be said for any abstraction that you personally do find useful.
Programming is abstractions all the way down. Unless you are writing 1s and 0s, it is abstractions built on top of abstractions.
Whether you think an abstraction is useful can be subjective, but everything is trade-offs.