Traditional object oriented programming is certainly easily at first, especially to those with a strong background in it. Unfortunately, in every app I've ever worked on, there's a dissonance between OOP and the browser environment that causes things to break down, at which point it becomes incredibly difficult to salvage without a re-write.

After working on some really complex JavaScript applications, my opinion is that the approach Yehuda's advocating in this post is enormously helpful when applications start getting complex, both in terms of the DOM as well as the behaviors that apply to them.