MRP,
first of all welcome! I think you do have some valid points, like everyone else. That is a fault I have, I always think others have a measure of right when they express themselves. I do not believe in human stupidity but I do believe biases totally influence our thinking. For this reason people having the same experience/information may come to different conclusions.
I have not read all the posts in the two threads, but still I could see a number of good questions that have been asked to you. I also have two:
Could you ever imagine that your beliefs could be wrong?
How do you think other religious/non-religiuos people would answer this same question?
If you permit me, I would strongly advise you to read a book entitled: why we believe what we believe.