The issue for me is (and this is my issue and why I wouldn't have a child alone, by choice. But does not mean it's right for everyone) I didn't see pnd coming at all. Even with fairly supportive parents and a wonderful dh. It knocked me for 6. I just about coped with support.
When ds was born I didn't suffer with PND, but ds wasn't well when he was born. Not sure how I would have got through that either without support.
You cope, until all of a sudden you don't cope anymore. You have to hope some catches it, before you get to that point.
I don't know what the answer is. I know for me, I wouldn't do it.
When people are making this choice there is no right or wrong. But I have seen many threads on here started by people who just haven't thought it through. Not regarding what happens if they get pnd. But the practicalities of having a child.
Not thought about childcare costs after the baby is born and they return to work. Not thought about what happens if the child is sick. Will their employer be ok with them taking a week or two off because your child has chicken pox. That type of thing.
Many people in LTR forget to factor all this is too. It's not exclusive to people having a baby on their own. But if you are on your own it all falls to you everytime.