I got your point. To answer your question, religious belief or faith itself isn't something that can be debated. When people come from different perspectives, it becomes a worthless exercise. The historical research of religions may be something many believers and non-believers are not familiar with and debating that is always useful. One also needs to remember that even historians start out from a certain bias, so the debate can be hard, but useful all the same because it can lead to knowledge and enlightenment, regardless of one's faith or lack thereof.