Still, I don't think that I've noticed one constructive thing come from these types of discussions.
Even if there were a winner, it wouldn't matter.
I'll tell you what I think, Mark. There are no winners or losers, because it's not a competition. It's a hobby that we all share, and we all come from different backgrounds and bring different perspectives to it. All of those perspectives are relevant in a discussion. If we can lay out the facts and reasoning to support our opinions and critically question the bases for other's opinions, while being thick-skinned enough to have our own perspectives and biases questioned, then we can have some lively discussions and debates that thoroughly cover a particular issue. Someone reading that discussion is likely to learn something and gain both knowledge and a greater appreciation for our hobby. This makes us all winners.
But if we constantly get offended by opposing opinions, and try to dismiss them out of hand or censor them from being offered . . . if we get into shouting matches and insult each other, etc. . . . then we all lose. Now I have certainly been guilty of this sort of behavior in the past, so I am not trying to pass judgment on anyone. I am simply saying that these discussions can be productive, even if no one convinces anyone to change their mind. Simply because the arguments are laid out, supported, and critically examined, such that anyone reading the thread can learn something, look at all the discussion, and make up their own mind where they stand on a particular issue. I think the discussion itself is what's valuable, not who's right or wrong or whether someone's mind was changed.
I have learned an awful lot about this hobby from many discussions on this forum, and I hope I've passed along some knowledge to others along the way. I just wish we could have some lively debates without it turning into bickering and, all too often, personal insults. And I just don't want to see anyone being led to believe they shouldn't post their opinions on any subject. I mean, that's kind of the whole point of a forum like this -- to be able to post your opinion and discuss a particular topic.