Well that suprised me NCD, I have only ever known German Shepherds and Boxers get Cushing, although I know a few S Terriers, I am not much into small breeds.
I take your point about breeders,but I feel that huge sums of money are now to be made breeding (not by all I know). You only have to look at the price of a pedigree pup these days. I am a yellow Lab person myself but always go for the same lineage,purely b/c I know from a temperament point of veiw they cannot be bettered. My old fella is on borrowed time now AND some days I am never having another b/c I know I will be devastated when this one goes, we have a special bond having gone through my "madness" with me, then I think maybe a smaller breed, quite taken with the Snauzers, or Norfolk terriers.
It seems incredulous to think what your son told you was true, not only do these spouses rob us of a future in some ways but to steal the past and have it spoiled seems to make the distrust even more and makes one feel the whole m was a sham when that is probably not the truth. I wish you well and especially on finding a new 4 legged side kick.