As a non-parent by choice, I swear that I have absolutely nothing against children. While some childless folk decry the practice of having and raising kids, I believe that we should all just focus on ourselves and do what makes us happy. The only part of child-rearing that offends me is the absolute insanity that some mothers display in their Facebook groups and forums . They are filled to the brim with unhinged anti-vax sentiments, bogus claims about the healing powers of essential oils and br…