My the way Dale, my friend breed Dobermans are you are 101% incorrect.
Dobermans are the most loyal breeds if raised correctly.
You were either not a good owner or the dog was ill.
A CANDID LOOK AT DOBERMAN TEMPERAMENT
by John T. Brueggeman
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Although Doberman temperament has undergone a gradual but steady decrease in overall sharpness during recent years, today's Doberman is still a dog that requires intelligent handling and does offer good protection for his owner, family, home, auto and business. But due to his energetic nature and super intelligence, many people do not make good owners although he isn't nearly as difficult to own as he was in those earlier days when the Doberman earned his reputation as being the sharpest thing on four feet! The uneducated public still harbors a pronounced fear of the Doberman Pinscher, and strangely enough, this has been a lasting blessing for the breed. But how then, can the Doberman breed with such a reputation, be one of the ten most popular breeds in the United States today.
The answer is simple enough. The Doberman has always been, for the most part, extremely loyal and very trustworthy to his master to a greater extent than most other breeds. He is also a dog that becomes an important and enjoyable part of the family. He requires close association with those he loves and when this love is present, his temperament makes him a natural protector.