Should the US just split up, Red and Blue nations?

I guess you don't like pineapple on your pizza. 

Quote by MindsEye
From the outside the US is so divided, Red states and Blue states. Should they just divide into two nations along their political ideologies? That way they can focus on nation building rather than blocking each others ideas. Would there have to be a war, or could it be a peaceful divorce?

Tough question

Where would you draw the lines? Around all the metropolitan areas? Much of the whole red-state/blue-state thing that you see from a distance is a rounding error, with many of the red states (especially the larger ones) just a few percent into the red and most of the blue states just a few percent blue.

Even in the reddest states have urban areas that lean strongly left, and suburban areas that are center-left. I have visited surprisingly (to outsiders) liberal communities in states like Idaho, Arizona, North Dakota and even Wyoming. And even the bluest states are pretty darned red in their rural areas: sparsely populated east-of-the-Sierras California is almost violently conservative in many places, and much of Oregon is seriously talking about splitting off to form “Greater Idaho,” with a number of country boards of commissioners formally voting to join if it comes to pass

So the actual division is urban/suburban/metropolitan versus rural/small-town/traditional. But even then, there are some suburbs that are very conservative, and there are lots of small college towns in the countryside that are very progressive.

How would you divide this up geographically in a way that would make ANYONE happy? I don’t think it can be done. And it would create additional complications that rural and mineral goods from the countryside would suddenly have to become not only interstate, but international, commerce to reach most markets. The economy would no longer function.

So if we all want to still have jobs, other than shooting at each other, maybe it would be better if we try to get along.

Yeah, to Joe71's point, you could get into the situation we sometimes see in our Quebec situation where Quebec starts talking separation to "preserve French language and culture" whereupon Montreal, the largest and most cosmopolitan (i.e. least French) city starts talking about leaving Quebec if Quebec leaves Canada. Trying to split the US along red and blue lines would likely end up with a jigsaw puzzle of city-states amidst larger regional zones. In short, a mess that makes the breakup of the Soviet Union look like a walk in the park.

Some states are close to 50-50.