Man... I really disliked my experience with MobX. Idk, just too much proxy "magic" for me and I actually like how "hard" it is to update state in Redux. Changing state isn't something that should be taken lightly! I think a problem people run into (in general) is having too much "non-essential" state I their application; especially in the global state. If state can possibly be derived from other state, then it's not essential