I agree with the above post!

Think of this, if there were not "Breeders" or "dog breeds" you would have no police dogs, herding dogs, sight hounds, hunting dogs etc. These traits were specifically bred for and preserved through selective breeding based on these traits. The dogs with bad temperament are not good candidates for breeding, that is where titling comes into place to prove the dogs "breed worthy".

Without dog breeds or breeders there would have been no search and rescue team in NYC on 9/11....

I commend responsible, ethical breeders! As they put everything they have into what they produce. There is a GREAT deal of money invested in titling and health certifying a dog. Whether it be paying handling fees, show expenses, travelling across the country to trial your dog, or shipping a dog off to Germany for their SchH titles etc. Most of my dog friends have a litter once every few years IF they're lucky. I'm not saying mixes can't "work" by any means, but the majority of dogs do the job a lot more effectively/consistantly when that trait has been specifically bred for.