Why don't you read it from their own mouths.
Click on the link below and pick some interviews of slaves from Georgia at random.
Then tell me what you think.
I've read some of those interviews in the past...the people being interviewed were mostly children when slavery ended. In some cases they may have been afraid to say what they really thought to the interviewer. No doubt there were many slaveholders who believed they were treating their slaves well, and there were many acts of kindness (which would explain owners feeling that their slaves were ungrateful if they ran away) but at best it meant adults being treated as children and having the rewards of their labor stolen from them.