I think the problem begins when we subscribe solely to a specific point of view, a particular doctrine.
This is what I believe in. These are the truths about this or that and they cannot be compromised.
We’ve learnt (been taught/taught ourselves) these doctrines over the years and have chosen to accept them as the path forward - the only path forward. And, we’ve galvanized the ‘opposition’ into a defined doctrine of its own - the other, that against which we must fight, come hell or high water.