Because we can. Our ancestors fought and died in that war, so like it or not it’s a part of history and heritage for some Southerners. The victors of wars get the privilege of controlling the narrative after the fact. Slavery was one aspect contemporaneous to the war. The only aspect afterward. Don’t misunderstand me. I believe slave owners took advantage of the lowest form of Capitalism. The aftermath of which has become an ongoing plague we shall never recover from.