If you choose to bring a child into the world, you are necessarily condemning the child to suffer, in at least the following ways, if not more:
(1) The child will experience physical pain.
(2) No matter how hard you try, you will foist your own failings and fears onto the child, which will directly and indirectly cause the child great suffering and psychic pain.
(3) The child will have to go through the difficult and painful process of figuring out how s/he fits (or doesn't) into a society with values that are -- for lack of a better general descriptive term -- pretty warped.
(4) The child is likely to have excruciatingly-painful adolescent experiences figuring out the mating system and social cues of humans. If you want evidence for the magnitude of this pain, ask any adult to remember in detail one of these adolescent experiences without cringing.
(5) Unless the child believes in God or the equivalent, s/he will live every day of his/her life knowing that any meaning to life is self-generated and death is impending and final.
(6) If the child lives long enough, s/he will have to watch people s/he loves deeply, die.
(7) The child will her/himself get old, get sick, be lonely, and die.
Finally, the decision to have children is clearly completely self-interested. The child does not yet exist, and therefore has no say in the matter.
Therefore, it would seem to me that that decision to have children is completely morally reprehensible. Can you offer some explanation for how/why the vast majority of the population feels that it is morally okay to have kids? I simply cannot fathom how anyone could possibly choose to inflict all of that pain on another human being.
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