Taekwondo has earned a reputation for being a competitive sport, but the martial art was originally developed for self-defense.
Tae = Foot; Kwon = Fist & Do = Way of / \"the way of the foot and fist\.
Like any other sport, Taekwondo is not that easy to learn but anyone at any age practice Taekwondo. It depends what would you like to do with Taekwondo and what would you like to achieve. Then you have to choose which discipline.