SolidGold
Your post makes my point for me.
I never used the word "acceptable" - as if I had the right to decide who is or is not acceptable.
Your contempt for all "believers" - regardless of what they believe in, and your denigration of all of them as "superstitious", confirms my experience that some atheists are quite as arrogant, bigoted, and narrow-minded as the believers they despise so wholeheartedly.
I am not asking you, or anyone else, to "concede" anything - except perhaps that might be more things to existence than are accounted for in your philosophy, and that, mistakenly perhaps, quite intelligent people might think they have good reasons not to be Atheists.
For the first 28 years of my life I was basically an agnostic with strong atheistic leanings. Personal experiences - much to my surprise, and somewhat reluctantly - made me change my mind. As an evolutionary biologist and also an archaeologist, you might think this peculiar. But unlike fundamentalists - both Christian and Atheist - I actually find no conflict, because I don't think that Science conflicts with my beliefs. I actually lecture on the subject of Evolution to Biology students, and if you attended my lectures you would find absolutely no reason to complain about theistic brainwashing.
I never try to push my views on existence and meaning on anyone. If they are really interested, and not just wanting a slanging match, I am happy to discuss my beliefs and why I believe them - but I dislike bothering people, who don't want to be bothered. However whenever I mention I am a Christian, I constantly get Atheists of your ilk treating me as if I am an imbecile, ignorant, uneducated etc.etc.etc. You are clearly such SPESHUL people that it gives you the right to be exceptionally rude to others who don't agree with you. I'm afraid my very existence would "bother" such people, but forgive me if I don't change my mind as a result.
Fortunately I can think of two Atheists - very good friends - at the University, who assure me that merely being Atheists doesn't necessarily mean that they think they are automatically intellectually superior specimens of humankind.