[Replying to myself to avoid editing the above.] I typically don't give a damn to downvotes but I'm wondering why they popped up in this case. So, just to be clear:

OP is asking specifically about single women and my answer talks about it, focusing on the fact that child raising is a bit too much for a single person. I am not talking about lesbian couples because they fall outside the scope of the question, my views on the later in this regard are the same as heterosexual couples.

(If the issue that people saw with my comment is something else, say it because I don't have a crystal ball.)