Samael, Sageous, I always enjoy reading your thoughts and appreciate those who strive to keep the topic moving forward.
So, I do think there's two things going on here. On the one hand, we have dualism in the metaphysical sense, which is about (in my own words) the uncertain connection between subjective perception and objective reality (which, depending on one's philosophy, may entail the total denial of one or the other). On the other, there is the binary nature of so many things that create conflict (good/evil, left/right, light/dark, etc).
Coming from a Buddhist point of view, I think there's an interesting bridge between the two. I'll try to give an abridged version as I suspect the audience is small and those who would be interested in it are probably already hip to these ideas, even if not expressed in Buddhist terms.
In Buddhism, the non-dualistic mode of consciousness is that we are conscious only in the present. There is no past or future. There is no self or other. There is no subject and object. Just pure experience. But there is also dualism. And in everyday life, dualism is the main mode of consciousness, if for no other reason that habituation. In the dualistic mode, our mind creates concepts, labels, associations, memories. These serve a practical and evolutionary purpose. It helps use to learn, organize, and speculate on our experience to improve our survival. But, over time, the mind churns on its own creations to make new creations, drifting further and further from subjective, in-the-present experience. The by-product of this is illusion. That is, the mind creates things and we come to believe they are "real" and even become attached to them. But straying too far from reality can create problems. Which is what bridges to the other topic of conflict.
So, the dualistic mode creates illusions. And what's more, this process operates according to each individual's experience. So each person accumulates their own illusions, different from everyone else. This leads to conflicting ideas between persons. And also conflicting ideas within each person. Conflict leads to negative emotions (like cognitive dissonance among others). Negative emotions are suffering. And so, we've circled back to the first noble truth of Buddhism: life is suffering.
Now, how to escape it? Well, there's a Buddhist view on that too, but that's a topic others can pursue on their own, and that's enough from me for now.