Yup, MobX has made developing more complex React components / UIs a sane endeavor once more. Every time I use MobX, I think to myself that it can't possibly be

Yup, MobX has made developing more complex React components / UIs a sane endeavor once more. Every time I use MobX, I think to myself that it can't possibly be this simple...then run the code, and pick up my jaw from the floor because everything just worked the way you intuitively thought it should. Meanwhile, relying on setState alone for complex components ends up being very error prone and tedious. I still rarely use MobX for global state because I prefer the original appeal of React in terms of making modular, reusable components, but I often use MobX as the state mechanism for my more complex components and bypass having to rely on setState altogether for those components.