I also find those who argue strongly for unity, and then assert that one political party or the other is wrong.
NOTE TO SELF: To call one view, idea or person wrong is duality.
But there is another more subtle compulsion in us toward disagreement and wondering, questioning and separating from the herd.
Coming together is more pleasurable for most people, therefore more desirable, hence the emphasis on unity. Coming apart or loss is typically more painful, hence the shunning of such experiences as bad.
Lesson: Feelings have little to do with creation and soul-making.