Jessica Olien adopted it for herself:
I believe that there must be a small demographic like me: people who would choose to be single parents not because their biological clock is ticking and they can’t find a partner, or because birth control failed, but because they simply want to raise a child alone. (I say this not as only as a woman. I’ve also known men who’ve raised their children alone quite happily.) Perhaps all of this sounds selfish to some people, but there is no conclusive evidence that I would be giving a child any less possibility for success than a kid with two parents, as long as I am mature and have the financial means. Much of the research that supports having children within marriage is about opportunity, not the physical presence of two parents.