Atheism is just a passive situation coming from the absence of a belief. It is wrong to mistify it into some sort of active action or attitude.
Well, there is this version of atheism. And sorry, I can google and find actually atheists that are different than you. But remember they are not really atheists, they are in effect relgious theists, who misunderstand atheism.
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Definitions
Atheism is the comprehensive world view of persons who are free from theism and have freed themselves of supernatural beliefs altogether. It is predicated on ancient Greek Materialism.
Atheism involves the mental attitude that unreservedly accepts the supremacy of reason and aims at establishing a life-style and ethical outlook verifiable by experience and the scientific method, independent of all arbitrary assumptions of authority and creeds.
Materialism declares that the cosmos is devoid of immanent conscious purpose; that it is governed by its own inherent, immutable, and impersonal laws; that there is no supernatural interference in human life; that humankind, finding the resources within themselves, can and must create their own destiny. It teaches that we must prize our life on earth and strive always to improve it. It holds that human beings are capable of creating a social system based on reason and justice. Materialism’s ‘faith’ is in humankind and their ability to transform the world culture by their own efforts. This is a commitment that is, in its very essence, life-asserting. It considers the struggle for progress as a moral obligation that is impossible without noble ideas that inspire us to bold, creative works. Materialism holds that our potential for good and more fulfilling cultural development is, for all practical purposes, unlimited."
We envision a world in which policies are made using the best evidence we have rather than using religious dogma.
www.atheists.org
Notice the URL atheists . org
So as always there is no need to use religion to claim what an atheist is. You just observe that it depends on the atheist in question and that none of us as atheists speak for the rest.
So a piece of advise one atheist to another. If you want to have your beliefs unchallanged by a follow atheist, ask me to put you on ignore and I will ask you to put me on ignore.
But until then. You are not the objective source of what an atheist is and neither am I. And nor are they.