First: Not all Plantation owners were lazy, cruel, etc. My ancestor and his sons worked the fields ALONGSIDE their slaves. Most were treated in a humane fashion, but yes, they were slaves.
Two: Comparing this issue to ABORTION is not accurate. Most people North & South didn’t have a problem with slavery.
And I repeat my former assertion that Thaddeus Stevens needed killing. Booth should have shot him FIRST.
I think there were a good number of slaveowners that were of the hard working type like your people. But the mathematics of slavery meant that a large percentage of the slaves lived on the large scale lowland plantations where life was very regimented and hard and owners were non producers growing rich on their slaves' sweat. This was the class that was the motivation behind secession. And this class, not the small slaveowners, that were the real target of Stevens' proposals.