If you are smart enough you can make every code fit your need and reach the code quality you need.

JS weakly typed ? Seriously learn on how to adapt your coding style. I've built more than 20 API/Apps and Node is the best thing I ever had to build networked apps. I have a J2EE/Spring, Python and RoR background, NodeJS/NPM took the best of every stuff created before.

In my case, I need to be fast and JS + NodeJS + his awesome community permits me to build stable, innovative solutions and high performance networked app in a very short amount of time.

We are in a world of inter-connected apps. NodeJS is for that. Adapt yourself.

I need hacker modules to accomplish and solves problems of my current worlds, hacker offers me that.

NodeJS is great and lot of thing I read before was old school shit.

And BTW, yes a lot of logic must be delegated to the client side. This is a trend and it will not be stopped. Rendering page server side, qu'est ce que je peux pas entendre comme connerie parfois.