Software development is not about chasing the latest shiny fad or trend on the market, it's about solving real-world problems by researching available solutions. So, if you think that Node doesn't fit or not equipped enough to solve your problems, you're welcome to check other solutions till you find the one most suitable to the problem at hand.

So, if you think that Ruby or Python could get things done for you and you're very familiar with them, go for either and get it done but to pick on Node just because you don't quite grasp its inner workings is really odd of you and the whole reasoning behind your critique is rather absurd.