Since the very beginning of my training, I always had a strong feeling that the training was worthwhile. But I couldn't logically explain why. And that bothered me for thirty years. I'm not one to just go on a feeling. Yet I did for decades. 

Over those thirty years, I have figured out why, beyond the possibility of saving your life aspect. In this talk, give a rough synopsis of at least part of the reasons I realized over the years. Observing for three decades showed me what my gut was telling me.