I don't consider myself an atheist in the sense most people mean. My feeling is that religious belief simply doesn't matter beyond whether the individual cares about it. I call this apatheism - basically, apathetic about theism.
Upon thinking about it, I think I've held this attitude for much of my life, although I was very slow to recognize it. When I was growing up, religious belief never seemed 'real' to me; it had the feel of the fantastic things I would imagine inside my head, rather than something that was real and grounded in the world. I participated in Methodist rituals (the religion I was brought up in) not because of any kind of earnest belief, but because I could tell they were important to others and felt it was worthwhile to respect that, even if I personally didn't have any interest.
I still feel that way today. I have no issues with your religious beliefs, Lukvance, or in your desire to share them. To me, it is the same as if you were trying to share a favored book or, perhaps, enjoyment of a favored food. What aggravates me is your assumption that, because it is favored to you, that everyone should find it equally favorable; if it weren't for the fact that I've seen exactly this sort of attitude in other people, including myself, about things which have nothing to do with religion, I would have no patience with you at all.