Wow, NEGATIVE training. That is truly a brand new viewpoint that I've never seen espoused by anyone before. I fail to understand how gaining more practical as well as academic knowledge of any aspect of flying is NEGATIVE. You seem to be missing the point. The point is not to teach pilots how to do deliberate spins for the sake of getting your jollies doing spins. It's to show them the various conditions and requirements for allowing this to happen. It's about experience and awareness. Why do you think so many pilots carry extra speed on final, and skid the base to final turn? They are uncomfortable and unfamiliar with the edges of the envelope because they fear the unknown and don't know what lurks around the corner. In an effort to avoid this, they are making things worse for themselves and displaying lack of skill as a pilot. I guess you think full stall training is negative too.
Spins are just a possible development of a stall.