Nor would I.
Overall, I think I will stick with my estimate of less than one in a hundred.
But recognizing just how much of Southern society drew direct benefit from slavery makes it easier to understand why the south would rebel to defend it.
Under the most restrictive understanding of states rights, people living through that history believed no faction could use the federal government to launch a military invasion of the south to impose their agenda. Resisting the northern invasion was the rallying cry needed to create an army.