Lots of threads have people disagreeing with each other without being too hostile. Not sure what you're asking for, exactly. ... Like, just, a general thread for random debates?
If so, then, no. I don't recall any threads set aside purely for people to argue with each other in. ... Feel free to make your own. I suggest calling it "Fite me! (Friendly debates, all topics)" or something.
Comments on Profile Post by Mr. Tired