Listen man I'm not a believer either, i'm not saying you should be following any religious doctrine. I'm just saying there's no material difference between respecting someone's cultural or religious sensibilities. You're alienating religious comrades for what seems to be no reason other than an imagined, arbitrary distinction between religion and any other way of life.
I could use your same logic to say that i should be able to use the n word because i arbitrarily decided that the set of social rules around why i shouldn't don't apply to me, and i shouldn't be expected to follow them.