Do you think it's possible to achieve a world where everyone is an atheist?
There's always Elmer's.
I suppose so, if you're into that sort of thing - tell Elmer I said, "Hi!"
I don't believe its possible. Its innate in some people to believe there is a higher power or supreme being guiding, constructing, destroying, punishing, saving, healing, and generally getting in the way of people. Its the way some people are. They need their hand held and shown what to do, how to live. Its truly sad and pathetic they can't think clearly and rationally. Its quite delusional actually.
Religion is partly spun off of the infantile concept of imminent justice. It begins with psychological dependency that affects children to varying degrees. Unless there is a competent adult around who can recognize the situation, a child may intensify the belief rather than have it degenerate.
For those who don't understand the term, "imminent justice" is essentially the idea that things exist for a purpose (that's a very simplified summary) and that their actions "supposed" to be consistent with this purpose - if a entity doesn't fulfill this "purpose" it's deserving of punishment. The opposite idea is that things can simply exist independent of any design or purpose and their behavior is simply the natural consequence of what they are and does not create any specific justifications. When you hear people ask "What is the meaning of life?" or "What is my purpose?" they are reflecting this belief. It's an attempt to explain things in terms of underlying intelligence.
So, until a "cure" is found for this common infantile belief, religion is likely to still be with us for a long time. Just a note, I did not develop the belief in infancy so I was spared the hardships that come with it but it took me a long time to grasp other peoples frame of reference as a consequence.