In general conversation, the word “atheist” is, in itself, irrelevant. A non-starter.
In fact, the only time the word comes into play is in religious discussions when it is often used derisively to describe folks who simply live life and accept things as they come — individuals who see no need to attribute events or actions to any “thing” or any “one.” IOW… people who are generally content with the idea that “it is what it is.”
No special identifier required.
Yet there are multiple blogs and other online media that carry on extensive and lengthy discussions to discredit this tangential word.
For example, it is the claim of religious believers that “atheists” are prone to ignore the glorious wonders all around them. They adamantly contend it is more than obvious that everything humans see and experience is the result of some phenomenal guy-in-the-sky. In their view, there simply is no other way to explain who we are and why we exist.
By contrast, those who refute the existence of this “celestial” entity/being are far more inclined to view life as a result of natural forces present in the Universe. And based on this perspective, they tend to live each day without expectation (or testament) of any preternatural events.
Further, the claim by religious believers that there is something beyond this life is viewed by the “atheists” as an inherently unproven event. And any tales of “near death” experiences are instinctively filed under “Fiction.”
This is why scores of non-labeled individuals find joy and happiness in their daily living. They fully recognize and accept that their presence in this world is based on a combination of circumstances that came together at an opportune moment. They feel no need or reason to either credit nor acknowledge any extraneous “source” for their good fortune.
Ironically, however, while these same folk find no substance in the claims of the religious, some have discovered the benefits of following the advice offered by a fellow named Luke:
“Eat, drink, and be merry, for tomorrow we die.”