HaKatan: disagreements are welcome and yes the amoraim and rishonim and achronim all used sharp language to point out where they thought the other was mistaken but in their heart of hearts they loved and respected each other.
the posts i enjoy reading the most on this forum are those i usually strongly disagree with but which are articulated in an intelligent, rational, unemotional and respectful way; see, e.g., akuperma.