I discovered MA recently. I wish I have done it before. I do MA for fitness and for fun, most of the fun comes from sparring, when you spar you always learn something and the lesson is not necessarily related to the fight itself but it is related on your capability of putting everithing you've got in the challange: skill, appilcation of theory, endurance, flexibility, speed, self-control, awareness, strenght physical and mental. I like my art (Kickboxing) because is all that, good for fitness and easy to learn (at least the basics...) so you can start sparring with limited experience ( I have 9 month training and I spar since when I had 4 month experience). Having said that I also would like to cross-train a more traditional martial art to have also some more internal benefit. Maybe I will join some tai chi class as soon as I find a good one compatible with my day schedule.