I sort of know where you're coming from. I've been in not very pleasant debates with people who get heated and where tempers have flared. I tend to prefer the term "discussion" over "debate" now, as "debate" signifies a right and wrong side to the argument.
Like Jonathan said, earthly wisdom isn't wisdom. My pastor once commented on worldly wisdom as people who "are learning more and more about less and less". If you have learnt how to treat your fellow man with love and respect even if your opinions differ, then I believe you can count yourself wiser than most.
