I thin we are all aware that Lincoln screwed up big time. There will be no war over secession, ever again.
You are looking through rose colored glasses. It would be insane to allow a Marxist state to come into existence on our West coast, taking enormous valuable property with it, and disenfranchising millions of U.S. Citizens in the minority there.
You want to talk problems, consider a Cuba on the U.S. mainland, armed with Chinese missiles. That is where a #Calexit leads.
Oh, so it is better for me to co-exist in the same country as Marxists? WTH? Are you in drugs?