HWD, I may have misinterpreted your post, but it appeared to imply that stalling and spinning are connected with aircraft attitude relative to the horizon, rather than with angle of attack. It is quite possible to stall and spin in a variety of attitudes, as can be demonstrated by a trip with an aerobatic instructor. Even without going aerobatic, training in slow flight explores the aircraft's behaviour when flown at a high angle of attack. The pilot who stalls and spins in from a turn (perhaps under the stress of an engine failure, to use a relatively common scenario) probably does not experience, subjectively, a particularly extreme attitude before the aircraft departs.
I think that PPL training ought to include spinning, but appreciate the various reasons why it doesn't. I agree with FFF that spinning can be rather good fun, once you've tried it.