It is my opinion that kata should be used more for self-perfection, than self-preservation. I probably don't need to expand, but I will anyway. Self-perfection, as in breathing, timing, balance, coordination, focus, so on and so forth. My aikido instructor would try and teach us a kata, of sorts. We simply referred to it as the walk, and it basically contains all the footwork that you would use in every application of aikido, as well as the hand movements. Its good, but I had a little trouble with it. Then, my instructor would make me do it slowly, to emphasize the points that I was missing, mostly balance, and concentration. This is where I believe the true value of kata come in. I was at a Tae Kwan Do tournament a while ago, and I witnessed the forms competition. No doubt, there focus, timing, etc. was all a lot better than mine was or is, but as near as I could tell, the techniques they were presenting were merely for show, and not for fighting off their worst case scenario. Of course, that seems to be Tae Kwon Do in a nutshell, but I digress. I personally like traditional forms and kata, because they give me something to practice when I can't find a traning partner. And, if I use my imagination a little, I can picture my own worst case scenario, and try to react and respond accordingly in the air. And, as many people have already said, this is merely a different type of form, or kata. But the traditional kata, again, focus more on the self-preservation side, and the things I do for cqc/jkd/kali kata and forms, they focus on my self-preservation.