We may not come to a perfect answer, but our brain requires we arrive at one we can live with. Hence, we might convince ourselves that some narrative fits and leave it at that. Lived history is like this in that we pass it through the filter of our own subjectivity. After all, there is no other way to look at the world save through our own lens.
It would be nice to move outside of this box sometimes and see our history via another angle; one which would force us outside of our comfort zone. But then, that might be too harsh a punishment.