ORIGINAL: ballgunner
I'm Air Force to my toes but I learned from a Navy Reserve friend. They stopped touch and goes. The reasoning was: it is a landing that is never really completed and a takeoff that you are never really ready for. If you have completed a landing, are under full control, and there's still enough runway for a controlled takeoff then go ahead.
I agree with the Navy's assesment but it is a good way to teach several things all at once. In my eyes they teach fine control as your speed is kept up on the ground during the transition, quick decision making since you need to decide if it is a good approach for landing, and after landing do you still have control and also is there enough runway to takeoff safely again or should you execute a full stop and try again. Granted, you will need know most of these items before the mains ever touch the ground.