If we are crazy then there are an awful lot of us crazy people. And you know how us crazy people are. We do crazy things like start revolutions.
Only 15% of the country wanted to go to war against Great Britain. Would you say 15% or more of the country is crazy?
I would say about 9% of America is unstable enough to go to civil war. However, 3% would leave once it started, and you would probably gain another 10% of the stable people in the chaos.