Used to fly
Many moons ago I used to race cars formula ford, Clubmans and a bit in formula 3.
It is only through driving the car beyond the limit that you can be comfortable driving the car on the limit. That is the only way you can fully appreciate what is happening and what is going to happen with the car. You knew that if the back broke away how far the tail could slide out before you lost it. You knew you could hold that point still in control. Not the fast way but a thorough understanding of how to extract the fastest lap time and to have the confience to do so.
I know a driver who considered himself to be ultra safe. He followed the speed limits had an excellent safety record, drove with care ......until.
One evening he hit a patch of ice, lost the car big time. He and his wife ended up in hospital for 3 months. He knew no better.
Its the same way with an aircraft! " Its only when you push the limits that you find what lies beyond" ! is a favourite saying which covers many aspects of life.
Obviously you do not want to achieve what you are learning to try to avoid ie killing yourself in an aircraft practicing how to avoid killing yourself. But in the right aircraft with the right instructor spin training should be done.
Infact a course in aerobatics is even better to allow you to fully understand what the aircraft can do and will make you a safer, more confident pilot.
We can train forever to the incipent stage with the idea that by doing so we will avoid the worst. The problem with that is the worst strikes when you least expect it and are least prepared for it the same as in a racing car.
There is an argument in twin flying to avoid full stalls the worry that by trying to recover adding differential power could cause a spin. Differential power either through mismanagement or one engine missing a beat.
With my examiner we take the twin high 8000-10000 feet and put it through its pace
Pace