Your endless appeals to lofty quotes and the history of the world are endearing. I haven't heard this kind of thing since I was 18. It gives me a lovely feeling of nostalgia... Of course debate doesn't necessarily involve politeness, historically, but if that's the best reason you can come up with for treating newcomers like interlopers on your precious paean of originality...

I'm baffled as to why you expect people to have to all come up with original (much less aggressive or powerful) reasons why they don't agree with you. If that many all share the same one, I guess one might start to worry that one's firmly-held belief that atheists have no one to be grateful to might start to wobble.