Why does not agreeing with someone mean I don't understand something? I am reasonably intelligent, and have an ability to comprehend- even if I don't support- someone's opinion.

I am a HUGE breastfeeding advocate. Does that mean everyone that doesn't support MY position is ignorant about the benefits of breastfeeding? That they are wrong, or, a bad parent if they don't follow a child-led approach to weaning? No, it means they don't support my position, that they feel differently.

I don't like guns (as much as one can affix a human emotion to an inanimate object). I don't agree with hunting, I don't agree with carrying a weapon, I don't agree with your interpretation of the 2nd amendment...that doesn't mean I don't understand, though.