Do you interpret disagreement as dislike?

I am in a profession where disagreement is the norm. If your colleagues aren’t challenging your beliefs, they aren’t doing their jobs. Moreover, they aren’t really your friends if they won’t help you refine your arguments. There are competitive people among my colleagues, to be sure; but for the most part, I would say we engage in “cooperative disagreement.”

I very rarely encounter this attitude in other settings, however, and a number of recent comments from various jellies (not aimed at me and on questions where I’m not participating) seem to betray quite the opposite sentiment. Some people seem to think that if their argument is unpopular, they must be unpopular.

Do you believe in cooperative disagreement? Do you try to assume that criticism is constructive until it is no longer reasonable to do so? Or do you take disagreement to be a sign of disrespect and come to dislike people who routinely disagree with you?