What I really like about the old style bind/live/delegate is that it's so grep-able. The new on()-based API makes it much harder to search through a codebase.

In addition, when you see something like:

    $('.table a').click(function() { ... } )

it immediately looks wrong, because there are probably multiple links in the table. Wrong code that looks wrong is great, because you can then refactor it as you come across it. But now you have to check if a second selector argument is passed to "on", to see if unnecessary event handlers are created.