One would think in a world such as today's...with how much we have advanced scientifically, intellectually, how much more we know on even a basic social level about the world around us and ourselves...and especially in an advanced Nation like the US....it shouldn't be so difficult to understand how misled we've been by superstitions such as religion. In some ways, science and mathematics (which is only part of the key) is very much like the work of magic and otherworldliness for some...it goes in one ear, sounds kinda' neat and brainy, but then pretty much leaves the other. But that's not nearly as disturbing as someone who does have the capacity to understand the logic and details of it, but can't accept it on principle. That despite the rationale that in other areas of life one has no eversion to, it must somehow be false because of something else that can't be proven, quantified, or calculated via anything but cultural hearsay.
Well, to be fair, it's easier for many atheists because the non-existence of God or any other supernatural sentient power/creator doesn't threaten them emotionally like it does a theist. In a lot of ways, it could be like telling someone that their parents aren't really their parents, and that they never loved you..they're just fulfilling some duty or act that they're getting paid for. You could have a lot of evidence and support for this revelation...birth certificates, signed contracts, even taped confessions...but someone will still just not want to believe it emotionally, and that could be a very powerful thing. It allows people to skirt truths and rationality as love will do time and time again. Indeed, you could very much see someone agreeing to 'live the lie' if they could somehow just ensure that the lies would be all they hear...if the parents keep pretending to love them, they'll keep pretending that it's genuine.
I think a lot is paralleled by the idea of an existing God.....companionship, needed authority, personal assurance/comfort, forgiveness, etc. It's very difficult to feel that one has to let that go as not being 'real'. Hence the important thing with atheism, as it would be for many other things, is not to predicate it upon ridicule....because that's not a ridiculous need and human condition. Atheism should not be out to destroy the lives of theists or leave them in a state of emotional loss or emptiness. Those needs still exist be one religious or not. I would hope that one would accept that these needs and virtues can be ultimately found within us and eachother as people, and not some supernatural authority who apparently gave them to us. It's important that that is communicated...true freedom and independent thought, not ridicule. The hard truth...the responsibility...ultimately lies with us as both practitioners and creators. I truly believe that understanding and shedding the confines of religion is our next great step in evolution.