As much as I respect your opinions, I have to disagree with you on this one, exile. After 8 years of learning & working extremely low Shotokan-type stances, I've come to the conclusion that the real reason they're that low is very simple, and reflects an interesting aspect of the Japanese culture (or at least, of the culture wherein the stances were emphasized and elongated and lowered to such an extent). They're longer and lower, simply, because that's harder than more upright (and generally more practical) stances. I also think this is the reason so many of the Okinawan kata had cat stances changed to back stances; not really reflecting a different application (although it does change them a little), but simply because the back stance is so godawful difficult to do really well.
They made the stances more difficult to perform in order to make them more difficult to perform. I don't think there was really a lot more thought put into it than that.
Now if you'll excuse me, I have to get to class for some kiba dachi drills.
Could be... but what was the thinking behind making them more difficult—the attitude you're referring to in the bolded part?
I wouldn't dispute the point, but if what you're saying here is on target, it still sounds as though they lost track of the functional basis of the stances and wound up using them to serve some other standard of 'goodness', no?