Why do people study martial arts?

Circumstances of each individual in combat situations varies widely, depending on the condition of mental, physical, and perhaps maturity. When people in the minimal stage viewed from the aspect of the martial strategy both physically and mentally, this is what will happen. When he was provoked and attacked, he would necessarily give replies to the section or anywhere on the opponent's body home to satisfy his desire for attacked others. Excessive emotions lead to vandalism attacks target. He might have defended himself by excess. But how these ineffective and inefficient. Not necessarily succeed. If one has the mental and physical preparation are trained in martial arts, his defense strategy will be more focused and not excessive.
At least people have more choices and have a better position to deal with physical conflict with another person if he has good self-defense mechanism. For example, a person you commit armed robbery with a knife because he wanted the contents of your wallet. Instantly lock your hands until he fell to the ground. Because he knows you are not a weak person, he will soon leave you. He survived, and you also saved. The situation will be different when you shout "robbed". He will hurt you. You may be wounded, he fled. People crowded beat. Then he may be dead or badly wounded.