(ETA: I'm not singling out the OP. I have heard this many times from many sources.)
I have a BIG problem with this. Why single out Schutzhund dogs? Why not say Agility dogs or Rally dog or Herding dogs?
Why do people think that SchH dogs need to be treated any different?
Unless of course they are only interested in the top scores. Limit the dogs time with it's humans so it's more driven to work??
IMHO it all comes down to this - what happens if your dog totally TANKS at Schutzhund? Or any other sport for that matter. What then?
My dogs are always, first and foremost, family pets. They learn to live in the house together in harmony (if at all possible) and be good members of society.
Competition, high scores and fame all come second (if at all).
I knew and (used to) respect a lady in the agility group I belonged to. Her dogs were AWESOME! The first thing that made me question the respect I was giving her was when she went out and bought a Border Jack puppy. Border Collie/Jack Russel mix - bred SPECIFICALLY for agility. Fast but short (so you get the low jump heights).
She and I were in the same beginner class. Me with Tazer and her with her new puppy. She kept going on and on about how THIS dog was going to be the next National Champion. Week Three of class found her starting to worry about the dogs height. He was growing too tall. He had to stay under a certain height in order to get the lower jump height. Week Five and she was training the puppy to slouch when it felt the measuring stick on it's back.
Last time she came to class was Week Six. After that I found out from another member of the group that she had "gotten rid of" the puppy because he went over height.
I don't buy a dog with the sole purpose of competing. If I want to compete I'll buy something non-living - like a race car. I am buying a companion, someone to spend 13+ years of my life with.