I appreciate that it’s often useful for people to say “I agree” or “I disagree” in contexts where wrong assumptions might be made.
That’s rarely the case, however. Most of the time, when people just indicate their mere agreement or disagreement with some remark, my reaction is pretty much: Why the heck did you bother to say that for? How about offering some kind of reason or argument or example? Do you think that anyone cares about your mere opinion? Be witty or be substantive or be silent! Then, despite my major disagreements with Plato’s epistemology, I feel the urge to beat them over the head with his distinction between opinion and knowledge.
Am I alone? Is this a crazy pet-peeve? The inevitable result of reading too many undergraduate philosophy papers? Or just a hope for higher standards of rationality?