Amy, my dear, from a biological perspective, you exist for one purpose, and no other. That purpose is to ensure that your DNA is preserved in the form of children. If you do not do that, then, as far as nature is concerned, there is no reason for your existence.
Also, sweety, perhaps you have heard of the term, “survival of the fittest”? It means that your DNA, with your inexplicable desire to override your instincts to have children, will not exist in the next generation, while my DNA is being carried forward with my two grandchildren. In the end, selfish little dolts like you, who mistakenly think that life is all about hedonism, prune your particular genetically determined personality traits out of the population. Humanity is better off that way.
Great post, well said.