The lifespan you mentioned for an atom, 10^23 years, is an extremely long time, much longer than the current estimated age of the universe, which is about 13.8 billion years (1.38 × 10^10 years). It's important to note that the lifespan of an individual atom is not a fixed value, but rather an estimate based on various factors and calculations.
If we consider the age of the oldest known atoms in the universe to be 10^10 years, it would still be significantly longer than the current age of the universe. However, it's essential to understand that atoms themselves do not "live" in the same sense as living organisms. Atoms can undergo various processes such as decay, fusion, and fission, but they do not possess consciousness or biological functions.
In terms of the survival of humanity, it is impossible to predict with certainty what the future holds for our species. Our existence and survival depend on a multitude of factors, including scientific advancements, societal changes, natural events, and unforeseen circumstances.
While it is true that atoms may eventually undergo changes or transformations over incredibly long timescales, the fate of humanity would depend on numerous other factors that are far more immediate and relevant to our existence. The lifespan of atoms is not a direct determinant of our survival as a species.
Additionally, it's worth noting that our understanding of the universe is continually evolving, and there may be discoveries and advancements in the future that could potentially alter our understanding of atoms, their properties, and the nature of the universe itself.
In summary, the long lifespan of atoms does not directly imply the inevitable demise of humanity. Our survival as a species depends on numerous complex factors and is not solely determined by the lifespan of individual atoms.