Why is a person called hate-filled if he expresses disagreement with another religion?

I agree that somehow holding your own opinion has become related to hate. Here's the difference though, in a perfect society where everyone actually respects each other we would all be able to voice our opinions in a reasonable and factual manner that would allow thought provoking and intelligent discourse on the matter. If we were all mature adults we would be able to have these conversations to understand why opposing views believe as they do so that they could have an understanding of the fundamentals of the opposite religion. If we were all mature adults we could then simply gain an understanding for each other and recognize that we don't have to convert everyone to our ways of thinking for them to be right. What is right and wrong for each person differs so much. However we're not all perfect, mature adults, and so most people when they are questioned about their religions instead of responding reasonably resort to emotional responses that is aimed to discredit the opposing view point. These are the people that label questioners of religion hate-filled. I for one enjoying not only questioning other religions but my own as well because it allows me to understand more fully why I believe what I believe, as well as why others do as they do.