How much pain can atheists withstand ?

[The End of Atheism]

It's pointless to discuss religion until God's existence is settled. I have enough experience with these discussions to know that.

Of course it isn’t. The existence of God and discussions of religion are two completely unrelated topics.  Sounds like you need more experience.

Boru

They're not unrelated lol. The vast majority of religions are centered around some concept of God. If we don't agree on this concept, there is no discussion, at all. But it's understandable that you would disagree as an atheist, you want to get your religious opponent into messy discussions and a have a lot of religious content to attack, so that you can come out winning. 

This is common sense : I can't have a discussion with someone about the contents of a holy book, if they don't believe it's ... holy.