That is, quite simply, not true.  I have had many discussions/dialogue with posters here - reasonable posters who know how to exchange ideas with respect and conviction.  Not, of course, with those determined to go for the quick put-down, snark, sarcasm - you know.  The ones who post laughing faces on so many posts, or simply disagree for the sake of disagreeing with me and others.....

To your request to provide you with a comment that has altered the way I view things?  Altered?  Not really - but considered and respected views from other commenters?  Rock, John David, some others....even Bro on occasion.... 
 :-)  I have even found myself agreeing with Elagabalus recently and remarked on it.

Typically, these posters do not go for the silly put-down, and although I may disagree with their position, I can respect them. When you go for the cheap shot? "Lady Paprocki"?  Not so much - it just proves to me that there is nothing there in your argument worth considering.