[ttaylorr]

Short answer: it's great.

I don't mean to echo the already loud voices of people championing React, but they're right: it's just awesome to write.

I think React has the right abstractions for today's web development: I am frequently able to express complex UI with very little SLOC. It's easy to see what a component does, and it's easy to jump into a project with little to no experience.

On that last point: I write software on a team with a lot of Angular.js fans. I've been trying to use React in more places, so I frequently start internal tools that have UI associated with them by using React.

It's going pretty well.

[Ronsenshi]

I think repeating some of the already mentioned answers is good - it shows common things that developers like.