It is a total waste of time if all the dog can do is prance around a show-ring and win because it's the "new best thing" or the newest fad, yet has a sh!t temperament. For companion dogs, temperament and health are the biggest concerns. Function before form - same thing working dog people state.
The dog must be able to function to do it's JOB. A companion dogs job is to be a companion, meaning it needs to be healthy, and needs to be temperamentally sound. Form follows this. Sure it's nice if it can win at shows and is a good specimen (don't get me started on standards here) of it's breed, but double important is that it can function doing it's job.
The whole argument of "well even a mutt can do that" doesn't hold water either. A mutt can do SchH, a mutt can herd cattle, a mutt could work as a drug dog, etc...but the reason for not breeding them is consistency.
Example, the mutt you pick up at the shelter likes to herd. You breed it to whatever, that also likes to herd, none of the puppies herd or like to herd. The border collie you buy likes to herd, it's a breed trait, more than likely if you breed it, at least some of the puppies are going to herd (no guarantees but much more likely than the mutt)
Same goes for a companion dog. You pick up a God-only-knows-what companion dog mix at the shelter. Sweetest thing on earth. You breed it, none of the puppies have that temperament at all, they threw back to a great grandparent with a bad disposition. Now the purebred dog that has carefully been selected for it's temperament is much more likely to produce pups with a good temperament.
That's why showing isn't the end all be all of a breed.Even that CH dog might throw a litter of plug-uglies, but at least you'll know that the puppies will more than likely be healthy and sound minded.
That's the huge difference. Working dog folks breed for conformation as well - if the dog is poorly conformed it's unlikely it will be able to work, dogs that don't work, don't get bred.
Long story short, working dog people don't like the show people because they ruin our breeds for working. Look at the GSD, look at the Malinois thread (gag), at least that's my malfunction with the "show" people. You can't say it doesn't happen in companion breeds because look at pugs. Breed for those short faces and they have breathing problems, oh but they win in the show ring!!! The interpretation of their standard is ruining them for pets because of health issues, attributed by showing and winning. Yep that CH dog gets bred, it's a "good" specimen of it's breed - too bad it has a short face and produced other pups that might win at showing, but can't breathe.
