Terrence O'Neill writes:

<<The US Navy put AOAs on every carrier plane in 1956, and cut (very professional pilots') landing accidents 50% !! the first year.>>

I flew some of those planes and there is no question that AOA was an essential tool for carrier-type approaches and landings (which Navy tactical pilots do whether the approach is to a carrier or not.)  Those approaches are flown at or near L/Dmax and are very different from the kinds of approaches flown by civilian pilots (or, for that matter, the Air Force.)  The airspeed indicator was neither accurate enough nor quick enough to handle these kinds of approaches.  There simply is no reason for any experienced civilian pilot to get anywhere near stall speed low except in a flare over the runway and therefore no need for the kind of precision and quick response afforded by an AOA.

I don't have a problem if someone wants to put an AOA in their airplane but if they are relying on it to tell them when they are close to a stall, I highly recommend that the go out and practice stalls or approaches thereto (at various g loadings) until they know what an approach to a stall feels like.  We also did ACM in the same Navy planes equipped with the same AOAs but no one looked at them during ACM -- there was no time and looking away from the target was a serious mistake.  We flew on the edge of stall by feel.

Looking at a number of recent accident reports makes me think that a number of  non-military pilots have a problem with understanding aircraft performance at high angles of bank and high g loadings.  We get the idea of how to avoid 1g stalls in the pattern fairly quickly but I see report after report of experienced pilots stalling out while pulling high g's low or trying to get to a runway after an engine failure by doing a very steep turn and not understanding what happens to sink rate if you do that.

Anyone that is truly concerned about inadvertent stalls should carefully consider taking some serious unusual attitude training (not the stuff you do for pilot certificates but serious unusual attitudes.)  If you still have money left after that, by all means, put in an AOA if you like it.