Found something I totally totally relate with in this
I'd often spent my childhood years asking myself that exact question, and could never understand the unrealistic ( at least thats the way it seemed to me) portrayal of what a woman is and what is mother should be. Then , as now, children seemed like so much pain and trouble, which some of us are probably better equipped to deal with than others. Just like any other pain and trouble - different people deal with pain differently. Some imbibe it, some face it, some turn away from it, some turn it around. Does the fact that some people can't deal with some kinds of pain well, make them any less human? I definitely don't think so. Yes the perpetuation of the species is very important, and sure , a lot of social norms stem from that, but hey, isn't it time that we recognised it as such?
It still makes me mad when I see the women around me, some of whom I deeply admire, taking the blame for everything that seems to be going wrong with their children, aching to live up to the hallowed portrayal of "motherhood". So often they've already done enough to be considered saints, but then the standards for sainthood for women are probably much higher than men.