do you know many women who have go on to become solo parents? No
Are you asking me a question and then answering it for me? Well, that's a strong argument 
I know some women who are solo parents, yes @Goatbilly . One of them stays at home and looks after her child. One, whose child is older, works as a university professor. I do know a few others. But thanks for your opinion that I don't. Perhaps if you think it doesn't happen, it says something about the area you're in and the people you're choosing to spend your time with.
You're taking a situation that's common and presenting it as though there's, unfortunately, no choice. I'll say the same sort of thing to you: you're going to have to be overweight for the rest of your life, I'm afraid, because, unfortunately, most people are.
See how much bollocks it is? It's perfectly possible to do otherwise, and it's in the hands of the individual, not in the hands of what the dull majority are doing. It's a shame that you're so sucked in by this belief you have that a woman needs a man. Many of us have moved on, and don't live in that 1950s mindset anymore.