I was a Mithril user before i moved to React. Mithril is really easy to use, reading blog post of lhorie was a bliss. But the community and code was just not moving ahead. Nothing changed, nothing exciting in roadmaps and I wasnt learning anything new.

React was just as easy as Mithril. And for big projects, React brings in a better structure and performance. React ecosystem is full of amazing people, there is always something new that i want to learn. Flux, Redux, Relay, RN, the list just goes on.