Hi Duns,
These days I find myself thinking less about philosophy than psychology. I don't have a problem with people believing in whatever they want, but I think it is a problem when it becomes harmful to people. Perhaps you've read about some of the ways that this happens in the time you've been here, if not I'm sure there are those who will readily point out a few things.
You seem like a well educated fellow, so let me ask you: What do you think? Evidently you still believe that the WTS is God's organization. What are your reasons? I can say you're just another human who doesn't really know anything in the end, but I think you deserve a chance to make your case. While I think you do make a good point that everyone would do well to keep in mind, you can just as easily apply that to anything or anyone. As you said: "If Kant is anywhere near correct, an atheist or a JW opposer can speak with no more self-assuredness than a loyal Witness can." That works both ways. All things being equal, then, the Witness perspective is also not any better than the others. I think we need to get into specifics to have meaningful discussions here.
"It is not so much that you use your mind wrongly--you usually don't use it at all. It uses you. This is the disease." -Eckhart Tolle, The Power of Now