In my opinion, if you get something useful out of the forum, participate. It seems to me that you do. But don't tell people what they can and cannot say. I think being respectful and non-judgmental is a worthy goal. But people are going to have their opinions, and they may be strongly held ones, and you will almost certainly disagree with some of those opinions. As djs.mom says there are all sorts of people on here. There are people who are really different from me and live a very different life from mine, but I still can learn from them. And sometimes I even change my mind.