Really? So what's the main topic? Interior decorating?
It could be. Or politics. Or the planning application in the village. Or the weather.
You simply don't read what people write, do you epix? If you do, you show terribly low levels of comprehension. So many atheist here have said that atheism is a non-subject, and religion is a non-subject. Most atheists, I'll bet, will NEVER discuss the subject at all, simply because in many societies no-one has the slightest interest in religion, or lack of religion. There'll be more conversations about the bus timetable than there ever would be about the utter irrelevence of people's beliefs or lack of beliefs.
Mike