no offense to anyone who's a tkd fan or to the thread starter... but, how damn easy is it to get a belt in tkd? shit, i see 6 to 10 year old kids, boys and girls, walking around here in my apartment complex and on the street w/black belts (i live in korea.. just outside of seoul).
i think i was about 11 when i had my checker belt and that's here in korea as well.
i think if you're taking tkd to learn flexibility and to get your reflexes together... there are much better traditional martial arts you can take where you'll become a better "fighter" in a shorter amount of time then it would take you in something like tae kwon do.
all the bad habits you learn in tkd (stance, hands down, etc) may hinder your progress if you're trying to build this into mma training (which from your posts, i'm assuming you are?)
lemme touch your feet