I just started practicing the IMAC basic with a lowly GCM Sukhoi. Why would I fly a humpty bump over and over again? I take great pleasure in making the most perfect line I can. I can still have fun just bombing around the field, but I always feel that I could burn fuel faster with a match. Why use a plane to do it. It's like any sport. The thrill comes from pushing your limits and achieving an ever increasing level of difficulty.
The first time I flew my own dremt-up turn-around routine when I was 16, there was no turning back.