guy wrote:
When my fellow pilots
take control and attempt a full stall or spin, the vast majority
freeze up mentally and/or physically upon entering the maneuver. They
are not used to the feelings, the control feel, the sight picture, and
the sounds, or lack there of.

My instructor took me into my first spin many years ago,
when I was a pre-solo pupil.

My feeling then, and I've had no reason to change it since,
is that I strongly doubt I would have recovered on my own,
for exactly the reasons you mention.

Personally I'm glad my club has gliders that can be used
for spin training at down to 1000ft, and that I/we practice
them annually.