Since I am still a pilot in training I'd like to give some input here. I think that most students believe the world rotates around them. They don't seem to realize that they are not paying the instructor for lessons to learn to fly. Most instructors do it on a volunteer basis. Students must be humble and have respect for their teachers time. When I go to the field I usually telephone my instructor a few days before and ask if he will be available. If he says yes I show up at the agreed upon time. Usually what happens is he has lots of other people who have questions. So I usually get my equipment set up and ready to go. Then he will stand beside me while I am flying or hovering. I usually try to get in 3 flights for the session. After I am done flying I usually prod him to go fly one of his heli's. I fly with a very helpful group of guys who are more than willing to stand beside you or get on a buddy box for a flight. This way there are many people available to help you. When done I usually thank him profusely for helping me. Unfortunately my family and work schedule doesn't allow me to get to the field as much as I would like. Sometimes weeks pass before I can get to the field. My instructor understands this. I told him when we started that I was committed to learning to fly no matter how long it took. My flying skills are improving as I go along.
Jeff it just sounds to me like you are burned out and need to take a break. If your students don't tell you I will tell you that I am greatful that there are people like you in the hobby so that others can learn to enjoy this wonderful hobby.