Tragically, people being prepared to pay silly money for a "rare olde-english-wire-haired-cocker-bull-doberdoodle" has caused unscrupulous individuals to cross any two breeds (or two cross-breeds) together, label them as "rare" and "highly sought after", give them a stupid name and charge top-dollar, while producing dozens of ill-bred and often unhealthy mongrel puppies and breeding their bitches into the ground.
It also encouraged the production of "rare" colours of established breeds - and sometimes these colours are rare for a reason eg white dobermans aren't recognised but the kennel club: they are often deaf, AND blind, have horrendous skin problems, as well as bowel and stomach problems, and have a reputation for being snappy and aggressive (as most of us would be if we were in constant pain and unable to properly see or hear),
Dogs have become viewed as accessories, and are passed from hand to hand, and replaced as easily as last year's handbag. Many people forget that there is a living, breathing sentient creature there, totally dependent on their owners for everything - and very vulnerable.
Dogs are sensitive and loving creatures, and a lot of buyers, attracted by the look of an animal, don't give a moments thoughts to its needs.
A glance at Gumtree, or Pets4Homes shows that there are far. far more puppies being randomly bred than there could ever be permanent loving homes for.
It is heartbreaking.