politics

Why does it bother me so much when someone whom I have an otherwise favorable opinion of, expresses something which gives me a clue as to their being a conservative/Republican/having different opinions and beliefs than mine? They've lived their life, and I've lived mine, and for whatever reasons, they've ended up with a different outlook and/or set of beliefs than me. Surely they're not a horrible person just because of that. So why does it make me cringe so much inside, and make me feel like there's a divide between us... they've revealed themself as a stranger to me... and that I could never really be comfortable with them?

Does it make me realize how insubstantial my own world-view is, that someone else, a seemingly reasonable person, can have a different world-view... is my sense of reality threatened? Does my mind fight against that threat?