I would hate to see things come to that as well. I don’t see separation as being a peaceful thing.
No doubt other red states would follow.
A balkanized country is not good. But doesn’t hurt to a “Plan B” in place...just in case. (Yep, I am a planner. Just in case plan A doesn’t pan out, I usually Plans A thru at least M in reserve. :))
What would the blue states do - threaten to declare war on us if we didn't stay put? 600,000 Americans died the last time the feds tried to stop a secessionist movement. Americans don't have the stomach for such bloodshed and carnage today. Especially not on their own soil.
Besides, they don't have the manpower (or firepower) to stop the red states from going their own way, if that's what they're determined to do.
No, it would be a political (and economic) re-alignment. Nothing more.