Jiu-Jitsu is awesome for me. The thrill, beauty and science that comprises this art just staggers me. It's thrilling because you'll grapple with an opponent in order that you may make him submit; It's beautiful because the two competitors in a bout match each other's movements to form a sort of a dance; It's scientific because the movements made are precise to be as efficient as possible. Also, there's just that special stuff about something you love that you can't explain, but that imponderable stuff is just what provides a sense of fulfillment in your passion. :)