I agree that any language is relatively sane when sticking to the good parts, and even that is a stretch with JavaScript. The code sharing benefits are very re

I agree that any language is relatively sane when sticking to the good parts, and even that is a stretch with JavaScript. The code sharing benefits are very real, while backend developers may need to learn a bit about the dom whereas frontend developers may need to learn a bit about sockets / file handles whatever, having a shared language (and libraries) is immensely powerful. I work on a clone of CouchDB in JavaScript, it also works as an (immature) fully functional server side clone running 90% shared code. The most used libraries in npm are shared between client and server, it has very real benefits