I am the same way. I typically try to merely express my opinion/views, not launch into outright disagreement, as though in a war. Additionally, if I have ever used that language (I disagree), it is not hard and fast disagreement. I am always open to discussing anything, regardless of my personal views. I know one fundamental thing, no human (including myself) knows everything. No human has a monopoly on truth. I try to carry a sense of humility around things/ideas/knowledge, as long as the thing isn't so overboard that it can do great harm. Then humility or not, I must do everything to stop the verbal harm being done. Generally, however, I will discourse to a point. If I see there is no balance, I stop talking.