Trump’s re-election will mean four hideous years of the GOP playing constant Civil War Chicken at best - as this Heritage Foundation ghoul made clear - and actual civil war at worst.
Avoiding that bloody nightmare is a pretty damn good reason to suck it up and vote for Biden.
Civil War 2.0 is a bunch of states seceding and the rest of us not making much of an effort to bring them back. I’d feel bad for a lot of decent people stuck there but I feel bad for them as it is
Also under this scenario the “red” states wouldn’t be the ones motivated to secede. They won! A civil war would be sparked by “blue” state recalcitrance and resistance being met with military force.