For the most part I think hooks are great, and often make code reusability very simple, without the need to manually reimplement things into classes, or make tons of wrapper components.
The issue I have generally isn't with hooks itself, but the docs. They could often do with better and more in-depth explanations as to how they work. Some examples:
It's not specifically documentation but if you want answers to all these questions, follow Dan abramov on Twitter and on his amazing blog overreacted.io. that really helped me understand at a deep level
This post is a must-read IMHO, overreacted.io/a-complete-guide-to...
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