I see no real benefits (at least, maybe, someone is going to build "really" the new facebook in term of complexity) in using React.

Mixing xml-like, html, js (i meant "jsx"... really?) and so on, for just the "view". I rarely saw so many messes in my life. It's not easy to learn, not easy to read, not easy to maintain. Why, i just ask why? Because is Facebook's stuff?

Do you need components? Vue.js is far better, easier, readable, maintainable framework. For simpler things there's the beautiful Riot.js also.

I've only just started playing with React myself, and I have to say I quite like it, despite all the transpilation nonsense.

I like the almost forced modularity, and the lack of two way data-binding (most required feature, most unused feature of other frameworks.)

However I've only bashed together a todo application... I want to try react native next for a project I think.

Yes. Overly verbose, error prone and mixes concerns. Hate it.