It was about states' rights more than about slavery. It worked out for the North, the states have fewer and fewer rights. It was never set up that way in the first place.
States rights to do what? The major states rights issue was the issue of slavery - it wasn't parking tickets.
Yeah, I'd say that's about right. That and the Morrill Tariff.
It was about states' rights to perpetuate the system of slavery. Had the confederates taken a stand for the defense of states' rights on some other issue besides slavery, they may have had a defensible point. That they wished to exercise their "rights" to keep a class of people in bondage was a violation of the laws of nature, and of the intent of the founding charter of the nation.
More accurately, the war was about a group of states that didn't like the outcome of a constitutionally valid election, and they wanted to take their ball and go home. Petty, childish, and in the end, tragic.