One becomes an atheist through an intricate yet predictable series of unfortunate events.
1. He begins to become seduced by the illusion that objective reality lies only in what can be perceived by the senses, measured, reproduced and demonstrated as proven fact.
2. This, in turn, causes him to become highly skeptical of phenomena. Perhaps it begins with a skepticism about trivialities like deja vu, ghosts, angels, demons, clairvoyance.
3. He reasons that there must be a scientific explanation for EVERYTHING. Note that this is an assumption and will play a major determinative role as a screen and filter for every idea that comes henceforth.
4. He begins to question his own faith and is deeply troubled by inconsistencies in the tradition that he has embraced. This expresses itself in several ways: 1) Questioning of the subjective experiences that he had encountered; 2) Becoming critical of areas of logical inconsistency in certain passages in holy texts; 3) Becoming highly cynical of the commands that the religion imposes on followers; 4) Finding fault with the moral quality of the deity in question; 5) Finding fault with the leaders and so-called spiritual giants of the faith; 6) Realizing that the world's religions all teach fundamentally different and irreconcilable things; 7) becoming troubled by the problem of evil; 8) Realizing that science has very different answers about the nature of reality and the origin of the universe.
5. This leads him to establish another set of tenets: 1) We cannot know what God wants of us; 2) If God were truly good, he would: a) remove all evil b) reveal himself to all creatures c) provide salvation for all; 3) religion is vastly incongruent with current scientific knowledge and progress.
6. In light of the fact that no religion offers what he wants or expects, he determines: 1) it is futile to worship this or any other god; 2) Indeed religion offers nothing and has no place in the landscape of future society; 3) There is no god.