This is the key. With good conventions and tools it is perfectly fine language. The concept of "Programming into one's language" from Code Complete applies strongly:

> Programmers who program "in" a language limit their thoughts to constructs that the language directly supports. If the language tools are primitive, the programmer's thoughts will also be primitive.

> Programmers who program "into" a language first decide what thoughts they want to express, and then they determine how to express those thoughts using the tools provided by their specific language.

I disagree with Coffeescript though, nothing will make that shit readable to me. :P