This is from an article I found online that elucidated the atheist perspective a lot for me: https://atheism-analyzed.blogspot.com/2010/11/why-you-and-i-cant-understand-atheists.html
It is very common to come away from a conversation with an Atheist scratching one’s head and wondering, “Why doesn’t he understand what I’m saying?” , or, “have I completely lost my ability to communicate?”. It seems to reflect deeply into our own view of reality that such a creature as we have just encountered can exist and find his way through a world too rational for him to comprehend.
I recently commented elsewhere on a pertinent article that I found, written by an Atheist concerning the ethics of Atheism. The article is both clearly written and is a fair and definitive statement of how Atheists think about transcendentals such as ethics. And how they think in general. After spending considerable energy degrading Christianity, the author finally gets to “the Atheist Foundation of Ethics”, which he calls, “Consequentialist” ethics. Here is an excerpt that will help show the thought process:
"An objective ethic is a consequentialist ethic that has an ultimate goal that is objectively measurable. It then becomes an objective question whether a particular recommended means will in fact lead to that goal, whether another means might be more effective. The statement "If you want X then you ought to do Y" becomes a statement about cause-and-effect relationships that is objectively true or false, and can be investigated by scientific procedures.
What about the choice of your ultimate goal, your ultimate value that you are pursuing? Can we say that some goal is "better" than others, and deserves to be adopted by everyone? I think there is one that we can predict will be widely popular, because it is favored by natural selection. But there is no logical or cosmic necessity that it be adopted by everyone.
There is a built-in "default" goal of biological life, genetic reproductive success, also called "inclusive fitness" by biologists."
There is more in the article; by all means read the whole thing if you are inclined. But this snippet is representative and indicative. The relationship is this, that the end determines the means. The first consideration is the goal (a common procedure), followed by the tactics needed to achieve that goal (another common procedure). But the author calls this an ethic. Ordinarily one might consider this to be a project management technique, to define a goal, then to set up tactics to achieve it. But not an ethic. An ethic would be a defined basis for judging which goal is right and which goal is wrong. So the term "consequentialist" apparently means that the consequence outweighs the tactics, not that the consequence has any moral value. The ethic then is without moral value.
The Atheist assumption here is that (a) there is no absolute right or wrong; (b) the goal is neither right nor wrong; (c) any means that successfully progress efficiently toward the achievement of the goal are acceptable.
Aside from this ethic encompassing the fundamentals of totalitarianism, it serves to illuminate the entire thought process used by Atheists in general. We can see clearly that the proposed ethic states that the conclusion is the imperative, and that the supporting elements (premises) are secondary and are to be selected for their ability to support the conclusion. This is classical definition of rationalization(1), the opposition to rationality.
If one is habituated to the defect of rationalization, the inverted procedure becomes transparent to him. It seems natural to believe a conclusion and then seek out the arguments that support it (with total disregard to the logic of the arguments). And it seems natural to reject and deny any arguments that do not support the conclusion (again with total disregard to the logic of the arguments).
In fact denialism is pathological in the rationale of Atheism. It is really the only defense against first principles based, transcendent logic. Such absolutist logic can only be denied, not disproved, and this is just what Nietzsche did in his support of Athesim. But most Atheists don't delve that deeply into the philosophy of their own beliefs, because there is no need to examine a personal truth construct for validity if one actually believes it.
The inversion in logic is transparent to the rationalization-afflicted, if they refuse to consider the use of first principle based, absolute, transcendent logic. In fact the inversion goes to the extent of inverting the meanings of the fallacies in order to support their conclusions.
This logical inversion is fatal to any conversation with an Atheist which tries to hinge on first principle based logic. Denial in the face of clear logic is the Atheist’s approach to argumentation. This is then turned into rebuttal in kind: tu Quoque, and followed with another denial that it has been done. If the non-Atheist quits in the frustration of arguing in a non-rational environment, the Atheist declares victory.
But there is more to the story than how the inversion happens. There is the why. Why is there a necessity for rationalization and denial of fallacy in the worldview of Atheism? It is necessary because the conclusion is more important to the atheist than the process that is used to derive it. In other words, the truth-finding process is not deemed necessary when the truth of the conclusion is pre-defined. Atheists have created their own truth. They must defend it at all cost. They cannot admit to fallacies because to do so would threaten the validity of their own personal truth construct.
Loss of the atheist’s truth construct can be a serious, even traumatic, event. It means that he must be exposed to external moral authority outside his own ethical story; it means that there becomes necessity for intellectual discipline, which is required when one seeks truth rather than inventing it; it means that it becomes necessary to value humility over elitism.
The loss of these aspects of the Atheist’s self-image is too devastating for many to consider. And so for some of them it becomes necessary to argue one’s viewpoint incessantly just to keep justifying it over and over. Why else would a person “without a belief” argue it so persistently and passionately? Only the need for self-justification could answer that drive.
I have previously outlined the several causes that seem to lead to Atheism. The need to preserve the worldview-cocoon and safety from external moral authority is strong. But the loss of truth-finding ability is exacerbated by the artificial truth-manufacturing that is needed to support the cocoon.
And it is their truth manufacturing that makes the Atheists impossible to understand for those of us who seek the truth by rejecting conclusions that are not based on fallacy-free premises. The logic systems are too different to allow communication to flow between parties with the transfer of meaning unencumbered by inversion.
Even as an Atheist myself for 40 years, I found it difficult to see the logic behind much of what other Atheists held to be true. But I finally decided to actually seek truth, rather than pack delusions around a preconception, no matter how valued the preconception.
Sometimes I try to communicate with one. But it is always the same, rebuttal by denial of the obvious, inability to connect on a rational basis. Empirically speaking, it’s a proven waste of time.
I think the line: "Denial in the face of clear logic is the Atheist’s approach to argumentation." Sums up the atheist perspective.