I would guess their hate drove themObviously economics were part of it. Funny how you doubt my "6%" yet you didn't bat an eye slaves being "40%" of the population. Slaves were expensive. Thousands of dollars in 1861 dollars. Most people couldn't afford them. Many didn't agree with the idea of slavery. It was the rich landowners who needed them.I'm sure taxes had a part and I'm not sure your 6% is true ,,,but even so the rest of the south surely found no fault in their ownership
Still, if all the above was true, why did 258,000 Confederates die fighting the Northern invaders?