There is a distinct difference between the ability to create life and the innate need to protect it; to cherish it. The life you've created is the one being you love most in the universe, and that intense love evolves into something that goes far beyond a sense of duty. It is instinct; pure and undeniable. As a direct result, one must neglect all else to preserve it. Even those we have claimed to love before.
My beloved has arrived, but rather than greeting him, All I can do is bite the corner of my apron with a blank expression- What an awkward woman am I. My heart has longed for him as hugely and openly as a full moonBut instead I narrow my eyes, and my glance to him Is sharp and narrow as the crescent moon. But then, I'm not the only one who behaves this way. My mother and my mother's mother were as silly and stumbling as I am when they were girls...Still, the love from my heart is overflowing, As bright and crimson as the heated metal in a blacksmith's forge.
(Just to give you an idea, Proust's reply was 'To be separated from Mama.') I think that the lowest depth of misery ought to be distinguished from the highest pitch of anguish. In the lower depths come enforced idleness, sexual boredom, and/or impotence. At the highest pitch, the death of a friend or even the fear of the death of a child.