ugh. Sounds like the old "God" issue some docs have. I think his age is a factor in that years ago these docs had a different role in health care; today docs are more like partners in our care, rather than dictators. He sounds like he has some prejudices that are influencing his 'care' of you. I hope you can find someone who appreciates your self knowledge and will work with you the way you. Challenging the way things are is fine and can lead to even better treatments, but the way he takes it personally would infuriate me and make me feel like his issues would interfere in my receiving good care. I would not be going back for a 4th visit.