I don’t disagree. Yet I always, for myself, come back to the circumstances of the forming of said “union” wherein the signees entered freely into a union that contained no mention of the inability to remove themselves from the union if they so desired. A “union” is by choice, and its perpetuation should be “by choice,” not by armed conflict to forcibly retain the constituents.
Don’t try to reason with these pro union uber alles Free republic Lincoln worshipping fascists.
There is one way to enter the union - through Congress. There are two ways to leave - through Congress or by rebellion. The southern slaver aristocracy chose the latter. They chose poorly.