Atheism, in general terms, is based on a negation of a transcendent dimension in Nature and in reality. According to a traditional perspective, atheist is not who denies and refuses the existence of Gods/Goddesses, but rather who has been abandoned by Gods/Goddesses. The analytical perspective is thus reversed.
A man abandoned by Gods/Goddesses (even for his choice and decision), is a man abandoned to his fate: he is thus a-theist, deprived of the Gods'/Goddesses' presence and support.
If Nature and reality are "cases" or "containers", which can be read and interpreted by scientific laws, Gods/Goddesses are the meta-physical content of Nature and reality which finally become expressions of the Divine's manifestation. Describing and interpreting such content is not a science goal: it's impossible to describe into mathematical formula the joy and role of family links (Vesta), the role of Law and Authority (Jupiter/Juno) or the revealed beauty of a Sunset (Venus): these links and meanings have to be interpreted through a different meta-scientific perspective.
Gods/Goddesses may be ignored or disdained: but this approach makes a man/woman a not-religious man/woman. The transcendent dimension is not denied because the idea of humanity, Nature and reality will be otherwise unavoidably reduced and degraded. This degradation results from a negation of those fundamental aspects of human spirit directly connected to this transcendent dimension. This dimension makes mankind and Nature not only a mere quantitative phenomenon, but a qualitative one. If we consider only these quantitative aspects anything is "crippled": both dimensions have thus to be integrated.
Mankind is presently living in this crippled condition whose effects are definitively evident.
Regaining "quality" to mankind and Nature thus firstly means overcoming "Theism" or the God's personification and humanization, the idea of Providence, sanctions, Hell and Heaven, the idea of Divine linked to a sterile idea of Good and Evil. Overcoming theism implies consequently overcoming Atheism because the concept of "Believing" disappears. Disappearing the idea of "believing", also the idea of "believer" will disappear and consequently also the idea of "not-believer". If the term "believer" is a non-sense, similarly also the term "atheist", in conventional terms, will be a non-sense.