Atheologian
John Frum
Since believers have their minds set, and unbelievers have their mind set, perhaps the agnostic has the most objective perspective to offer on the issue. if believers cant prove God and unbelievers cant prove that God does not exist, the agnostics have the most relevant information to discuss.
in essence it seems no one knows, as it is, so the agnostic delivers.
This is what I was getting at. Agnostics can offer arguments for both sides, and keep a debate flowing neutrally. So, is it reasonable to conclude that without agnostics, we could not have a conducive debate?