As far as the Lethal Weapon... I prefer to perpetuate his delusions for more reasons than I care to post. But, mostly my own amusement. You'll just have to trust me that it's worth it. Then again........
I used to do TKD. I did it because It help me with my focus (I have an attention span of gerbil) and with fitness. Even though It didn't teach me how to fight I have many fond memories of it, but I am ready for an art that is actually going to teach me self defense now.
Taekwondo is a great workout because it works a lot with lower body and some upper body strength. It is also fun to do but these are mostly for the world taekwondo federation. For international taekwondo it is a whole new thing with more grappling, throwing, striking with hands, manipulation, etc.
Peace from Croatia
I took TKD in the late 70s early 80s. I remember the sparring at the end of class being hard, full contact sparring. High kicks were thrown sparingly. Back then most of the instructors had day jobs and taught at night because the loved the art and loved fighting. Kiddie classes killed TKD.
You know what? This forum got me thinking about taking it again to improve my kicks. Maybe I will look up a taekwondo (or tang soo do) place in the CSRA.