Yeah, unfortunately "should be" and "is" aren't always the same. The Founding Fathers kind of dropped the ball by not providing a method of "divorce" for the states, but at the same time, I don't think the Confederacy would have survived as a nation even if it had won, mainly because it would have established that states could leave whenever for whatever reason. Whether that's a good thing or a bad thing is a philosophical debate. On the one hand, having a unified government of republican English speakers created the only nation that could stop the Empire of Japan and the Soviet Union in the next century. On the other hand, it's also creating the city-dominated cesspool of this century, which red states just have to deal with because the blue states parasitize them and will never let them leave even if they wanted to.