"most slaves were treated fairly by their masters"
Please explain to me how enslavement can in any way be described as "fair treatment".
"most slaves choose to stay and work for the same people who had previously owned them after they were freed."
Exactly what other options were available to them?
"I brought up the pet comparison because many people love their pets and treat them as part of their family, while other beat and generally abuse their pets. The analogy seemed fair, although I in no way think blacks are animals"
You also obviously don't think they are people with the same hopes and aspirations as "those of us descended from their ancestors owners".
I will go with you on that.
Here is a fascinating website of interviews of former slaves.
I clicked on stories from people who were from the Athens / Eatonton Georgia area ("Uncle Remus" territory) and virtually all say things like "Our master was nice....but we heard tell of other places where....."
One story of a women who went on to become a teacher in Athens (black school, I am sure) told of when one the slaves got sick, the master went and got Dr. Long.
That was Dr. Crawford W, Long....inventor of anesthesia and the most famous doctor ever to come from Georgia.
Oh well....I'll let the former slaves speak for themselves:
Born in Slavery: Slave Narratives from the Federal Writers' Project, 1936-1938