All of my single engine aircraft have no stability control on the ground or in the air. Example: I set the aircraft in slightly nose up pitch attitude in a VY climb. I use a few turns of elevator nose up trim to get established in the climb. I take my hands off the joystick and the aircraft is all over the sky. Within seconds I am in a 60 degree bank to the left, approaching VNE in an unusual and unrecoverable flight attitude. One second I am climbing at over 2000 FPM and the next I am descending at 1500 FPM. I am an instrument rated pilot with over 200 hours so I know flying an actual Cessna 172 is not this difficult. Is there something I am missing? Any suggestions would be greatly appreciated.