I'm confused about jQuery. 

On one hand it is shipped with the Microsoft MVC library, which I respect as a well thought-out library that I enjoy using.

On the other hand, I was recently pointed in the direction of [this](http://groups.google.com/group/comp.lang.javascript/browse_frm/thread/3d90e8b8a8301462) post in comp.lang.javascript in which the author has very few kind words to say of jQuery (and, apparently several other similar libraries), and is kind/brave enough to provide [his own library](http://www.cinsoft.net/mylib.html).

What's your take on the current state of jQuery, and other such JS libraries?