Why not take Javascript event delegation to the extreme?

Question

By now most folks on this site are probably aware that:

$(\"#someTable TD.foo\").click(function(){
    $(e.target).doSomething();
});

is go

Answer 1

If you were doing it in plain JavaScript, the impact of random clicks anywhere on the page triggering events is almost zero. However in jQuery the consequence could be much greater due to the amount of raw JS commands that it has to run to produce the same effect.

Personally, I find that a little delegation is good, but too much of it will start causing more problems than it solves.