My name is Yixin and I am a former student of Tae Kwon Do.
I learned TKD from this guy: http://www.namskicksusa.com/ (Grandmaster Nam)
I did it for a long time and I actually enjoyed it. We kicked each other in the groin regularly and a good time was had by all.
Not once did I think (or was I told for that matter) that I was learning effective, transferable combat skills useful in the ring or on the street.
That is all.