[Whys]

If we believe, as I do, that reality is infinite, both in the macro, the micro, and perhaps in other ways transcendent of the physical dimensional universe, then a Theory of Everything could not possibly exist as anything more than a probability set. As a matter of epistemology, a portion of the set can not contain the entire set without exploring philosophical possibilities beyond the empirical.

In short, any Theory of Everything is the sound of one hand clapping. Though personally... I still like the sound of half an applause. ;)