This is not a difficult question, and your case has no merit, period.
To see that, simply ask yourself this question: who lawfully held the deeds to those properties?
In any court of law anywhere in the world, the lawful deed holder owns the property.
So, tell us, which Federal property did the Confederacy lawfully own deeds to?
JCBreckenridge: "Again, be honest here. The only major battle fought outside of the Confederacy is in Gettysburg. One battle in 4 years.
How many fought on Confederate territory? Every other one."
Well, since Gettysburg in Pennsylvania was the largest single battle of the war, by that measure there were no other battles, and the war was fought only in Pennsylvania! ;-)
See, two can play that game.
Oh, so now you wish to talk about some smaller campaigns & battles too?
I've already summarized any number of those, from Maryland to New Mexico.
And all of your ludicrous claims that these somehow weren't really "Union territory" only prove-positive that the Confederacy far from wishing to be just "left alone" was actually out aggressing on the United States where-ever and when-ever it could.
JCBreckenridge: "‘Final solution’? Please. Show me evidence for this position other than personal prejudice."
I'll say it again: that is just as likely (meaning: most unlikely) as any more "rosy scenario" alternate history you might suggest.
It answers your question: was the Civil War worth it?
Yes, certainly compared to that.
“To see that, simply ask yourself this question: who lawfully held the deeds to those properties?”
Apparently not “We the People!”
It’s just not controversial to point out that all the major battles save Gettysburg were fought on confederate soil.