Mike,
They do contribute by sparking interest in some however, most courses are very lacking as far as self defense goes. Most of these "Self Defense Courses" are Fight Back courses not self defense. Feeling secure or having a sense of security is simply a feeling, a mind game. Having a sense of being able to defend one's individual self is what the game is about. It isn't about being able to to actually do it and that is what most of these programs do. They enpower the participant to feel good. I'm not knocking them only stating a fact. I simply want to call them what they are. Self defense isn't about fighting, although fighting can be one of many forms of self defense and it should be the absolute last form used. Why is fighting always the first chosen to be taught? Because it makes the participant feel good about themselves quickly. Most people don't want to know real self defense they want to feel secure about themselves and their love ones. That is why most communities don't properly fund their police departments and complain bitterly when somethng happens and the police aren't there. Police do a great job for the most part, AFTER the Crime is committed. Criminals for the most part don't commit the crime if they feel they will get caught. An attacker, for the most part won't attack if they feel they they can't win. The deterent isn't the fact we are secure it is the feeling the bad person has they can't get away with it. The security isn't because we are secure, it is the feeling of being secure. If anyone were to get up to shopping or school or work in the morning with the sense or feeling I am going to be attacked and possiblility die when I get there how many would go? It is that sense of security which allow most of us to go about our lives in the manner we do. Self defense courses allow the participants to feel secure in their abilities to fight back.
If the course doesn't address awearness, conflict resolution, and legalities then it isn't a self defense course. It is an, if you are in trouble - Fight course. Fighting at the wrong time or even at the right time but for too long can cause you even more problems and the great line of "I'd rather be judged by 12 than be carried by 6", attitude can get you just that if you don't know, understand and apply the legalities. You will find your self defense "Fight back" couse doesn't help your court self defense.
Why do these courses quickly come in demand where there is a sudden shift in people's lives? For example, over a three or four week period when there is a serial killer or a child abductor on the loose. We suddenly become insecure and want a way to return to that feeling of security. People will pay hard earned money and will work hard for the feeling. Once the serial killer is caught the sense of security returns and the desire and demand for self defense quicky deminishes. For most it is the Feeling of being Secure they want and need. Therefore many within the martial arts create programs that meet that need.
Danny