I used to be in a lot of fights up until I took up the MA (its been almost 5 years now). I even went to jail on one occasion. But how the arts have helped me (and how I have used my art) is getting any pent up aggression, or stress out in the school. I think most fights happen (at least in my case), because you feel you have to prove you are tough and should be given respect. The MA teaches you how tough you are or should I say, that you were not as tough as you thought, and that respect is earned, not just given. I think that is why you don't hear too much of good martial artists getting in a lot of fights per say, but as you can see by the posts, are ready to defend themselves if need be. I didn't vote because I think you are looking for Physical usage of your art, but I would put yes me, because knowing how I was before I found the MA, the only way I can explain my lack of fighting is by using my art. Not to say that there have been some close calls where I really thought I would have to defend myself, but I think confidence can be an intimidating factor. When you are picking a fight you are looking for a specific response (thats usually when the pushing and shoving starts, or punches are thrown) and when you dont get that response, you push harder and harder. But when they guy who doesnt want to fight isnt cowering and extremely fearful, a person will see that it may not be a good idea to test this guy. They usually just call you a P***Y or other last ditch effort to provoke you and walk away. Whoa
sorry for rambling on I guess I got a little off topic.