But why if you are experienced at what you do is it good to train with them? little knowledge, uncoordinated, little control, possibly unfit and dangerous to themselves and others.
Funny that last statement, isn't it supposed to be the experts who are dangerous,though to others and not themselves?
The main thing about beginners is that they do not act the way they are supposed to, they do not perform the techniques the way they are supposed to and it doesn't matter what system they are learning, unarmed, armed, firearms it is all a muddle which to an experienced person and training partner can be frustrating. Hang on a minute, what I have just described is what happens on the street, uncooperative and unresponsive enemies with their own game plan who will not act how you think they should act in relation to your combat system and if untrained do not react or if trained do not respond as you are used to your training partners responding.
You can't get the pistol out of the beginners hand because his wrist is too stiff or his finger is on the trigger and you don't want to damage it. You can't get the arm lock on because his arm bends the wrong way. You don't like practicing with them because when they go to punch or kick you they try to take your head off or their kick is wrong and you cannot stop it because that is not how you were taught to stop that kick. WOW sounds just like on the street.
Everyone likes to train with people of there own skill level where your training partner plays nice and your technique looks great, you can actually sometimes hear the groan when the beginner comes around to train with the experienced student.
We were all beginners at one time and in reality we still are, we all have instructors who are more experienced than us and we train alongside students who are more experienced or advanced than us. So don't look down on the beginner because you are still one yourself, learn from them as much as they can learn from you.
Once a teacher always a student.