Hey Granfire,
There may be some confusion over the definitions and choice of words here. In your first post, you said:
Now seriously, being a MARTIAL Art, how can sparring not have been part of it - traditionally. How else do you learn how to fight if not by fighting.
then, following Sukerin's post you said:
I mean, if you bill your program as all inclusive, fitness and SD, should sparring not have a somewhat mandatory part in it?
Now, the question is in the definitions. For example, if you define fighting within competitive constructs (as in TKD tournament fighting), then absolutely it's required. However, there is nothing in the requirements of fitness, or self defence that demands sparring. Contact, yes. Adrenaline, definately. But sparring is not absolutely required.
However, if the question is more whether or not sparring is required in TKD, I would say absolutely. My TKD school (oh, way back in the day now.... my, I feel old) was the only one in the area, so there was no competitive aspect whatsoever, however there was a lot of sparring, as it is one of the fundamental training aids for TKD. Without it, I'd say you're not really doing TKD, actually.
There are the SD drills, but they are drills. You know what to expect and you know what to do.
You spar you don't know what to expect and you have to use your training and wits to keep from getting bonked in the shnaz.
My personal opinion is it shouldn't be called teaching self defense if there isn't free flow, hard contact at some point in the training. There is no substitute for it, and it is neccesary to mimic as close as possible to the stress of real hand to hand combat. Does it become a game? Yeah, much of the time. It is a serious game though, with needed skills. If you don't do it, you are practicing theory. With the added stress and adrenaline of a violent encounter, theory usually doesn't make the cut.
You can drill with chaos, adrenaline, and more, without sparring, and maintain more realism as it pertains to self defence. And kata is really not "theory", when you get down to it. A theory is an unproven belief, and the way the kata are formed is the lessons taken from experience are then distilled into the form refered to as kata. And some systems teach exclusively with this method, but still manage to generate a great deal of adrenaline, real-fight-feel, speed, distancing, angling, hard contact, and more. As Gran said, it's not an either/or situation, it's really closer to his idea of fencing needing to involve fencing (as TKD needs to involve the training methods of TKD, which includes sparring), however fencing does not need grappling skills, although it is fun, and can be useful if self defence is the aim (same as striking skills, and more), but it's not required to be fencing. Sparring is required for it to be TKD, but not to learn to "fight", or for SD (in the most common form).