> Why are you so arrogant

Assuming they are, just for the sake of the discussion: what kind of answer do you expect to this question? You think someone who is arrogant has a theory of why they are so and are willing to share it? I would expect they are mostly blind to their own arrogance. Can be useful to point it out.

I guess it was just a rhetorical question. But it feels weird. Do you think it can possibly do anything else than create hostility?