One of the people I follow on twitter posted this today, and it is one of the most gloriously true, wise, and pithy statements I've ever read anywhere:
Being proved wrong, or having an ill-informed or lazy opinion challenged is always a good thing. You learn, and become a better person.
It puts into words some vague feelings of discontent I've had--discontent at people agreeing with me. I've always felt vaguely suspicious when people agree with me--if other people think I'm right, then there's probably something wrong.
Yet, the other side of the coin is: I am as thin-skinned as any other man, and I resent people telling me I'm wrong. But the thing is... when I have been challenged, and I gave it further thought, and I have as a result, changed my mind--it has always, always been a good thing.
Nobody is correct 100% of the time, so why the hell are we so stubborn to change our minds?
Being challenged is more complex than being agreed with, but it can also be more satisfying in the end.