React is great. But the tooling around it tends to complicate things a lot. Just for example react-redux (not just redux).

When I first started with React, it felt awesome - just React still feels great. But I had just started then and then got introduced to redux (I had been using something similar custom built). That was good too, until I learnt react-redux. I get the concepts, I understand every bit of it and have used it correctly in many large apps - it is useful. But react-redux just feels awkward many times and I consistently feel something is wrong with it - but I don't know what. React-Redux just feels disconnected with the idea of independent web-components.

On a side note - If one is okay moving to Typescript, Angular2 is just amazing.