They will never quit though. If they quit, their parents would kill them. It is like that commercial where the father takes his daughter, who is all of three or four, to a tennis court to have her practice. She can not even hang on to the racket she is so little. Pushing kids like this is not good for them.
Kids have to have freedom when it comes to extracurricular activities.
Push a kid too hard they may get burned out. We have all known people who just became fed up with it all, I am sure. They burn out on life and just do the bare minimum required to get by. Who knows, the kid may grow up to need therapy. I didn't think so.