[Ditto]

We just have a different opinion on whether or not secession was legal.

That's true. I can find no evidence that it ever was. It was a tortured interpertation of the Constitution.

[Leesylvanian]

It may have been "a tortured interpertation of the Constitution" to use your phrase, but you can't point to anything specific that takes away a state's right to withdraw when union no longer suited it. Or, are you going to argue that the states were being held against their will after voluntarily giving limited powers to the new federal government?