Use the force!!!

I have been teaching the martial arts in one form or another now for over 23 years.
i have seen a lot and dealt with every different scenario possible. Over the years, there has always been one particular "mind set" or phrase that has irked me. it happened again and now i want to rant!!
I could never force my child to >>>insert whatever here<<<<.
I have never understood that. Here is where this comes from.
Over the years i have watched many students quit the martial arts. and i am fine with that. Martial arts is not for everyone. some people quit at white belt, some at yellow, some at blue...and i am ok with that. Its when they quit at black stripe. There are 6 names that pop into my head over the years that have quit at this level. and every parent has given me the exact same response...i dont want to force them...
im sorry, but sometimes, we need to force children to do things. That is called parenting. Children are children and dont always make smart decisions...that is why they are children and it is our job to guide them...When a child is at black stripe, there are a lot of different thoughts going through their head...self doubt, scared, cant do it...every person that is on our black belt wall of fame wanted to quit. i am pretty sure i had the dont quit stay focused talk with every one that is up there. It is natural for a child to want to quit when the going gets tough. what i dont think is right is when the parent lets them. not this close to a huge accomplishemt. To me, it is like running the Boston Marathon and quitting 100 feet from the finish line. Your goal is in sight, you can see it, you can taste it, but you quit anyways...
to get to black stripe, it takes a minimum of 4 years of training, a lot of blood, sweat and tears, and thousands of dollars. It is not an easy road, but the rewards are well worth it. Part of the reward is the overcoming of the challenge to get there.
When a parent allows a child to quit something because it is tough, boring, too easy, whatever reason a self doubting child will give, they are setting a scary precedent. Relationship is not working out? get a divorce? School is tough? quit. Dont like the mundane tasks of my job? quit...children do what they know and the adult they become is based on their experiences as a child.
i know what i am using as an example is extreme, but to me, there isnt much difference. Getting a black belt is a huuuge accomplishment.
and for me, its not about the money, as someone so politely tried to point out to me once...i have put a lot of work into the student and developed a relationship with them. i look at a lot of the children at Sidekicks as my children...and then feel very helpless when that person wants to quit, because i know that at the end of the day, i wont get any say in it.
If your child was to say i dont want to brush my teeth anymore...or eat my broccoli, or go to school or whatever, think about how you react...and then maybe next time you can use the force...
Am i off base? maybe some parents can chime in and let me know their thoughts...

Just the ramblings in my head...