I do understand all that, but “a page of history is worth a volume of logic.” The War of Northern Aggression is a huge precedent.
Why would a nation let a state just leave if it could be sold?
The same thing that officially got Abe Lincoln shooting Southward would figure here: walking off with Federal property and initiating their own shooting.
Perhaps, but if the choice is between bucking the 'precednet' with logic and Law or being crushed under the continuation of the consolodation of government, what choice do we really have?
If, from the more wretched parts of the old world, we look at those which are in an advanced stage of improvement, we still find the greedy hand of government thrusting itself into every corner and crevice of industry, and grasping the spoil of the multitude. Invention is continually exercised, to furnish new pretenses for revenues and taxation. It watches prosperity as its prey and permits none to escape without tribute.
Thomas Paine, Rights of Man, 1791