[jerf]

Mostly because for all the development done on it, Javascript is still a %50 accurate name; it ain't Java, but it is definitely a scripting language. Node may be popular, but it's lightyears away from being able to say that it's chasing all the other languages out of the server niche, and it's been around for long enough that we can judge it's unlikely ever going to. In 5 years it's going to be a lot easier to get a non-scripting language compiled on to the client than it is to make a scripting language work as your sole backend language.