I think the problem stems from being encouraged to choose your ideal birth and create birth plans etc.
I agree with this. I also think that what seems to be the new normal of baby showers, and knowing the baby's sex before it's born and sharing that in a very public way, create or enforce an expectation that childbirth is risk-free or that everything will go to plan. The reality is that things can go wrong, sometimes tragically so.
Maybe it sounds very doom-laden, but when I was pregnant - 17 years ago now - I was very aware that not all pregnancies are straightforward or end well. The phrase, "there's many a slip twixt cup and lip" was one that was always in my mind. I had a birth plan, because I was encouraged told to make one, but my included a statement that at all times I would take advice of medical staff and change it if need be.
My DS was born after I was induced at 36 weeks. He was low birth weight, tube-fed and was in an incubator in the Special Care Baby Unit (SCBU) for the first 4 weeks of his life. The rooms in the SCBU had windows on one side, onto a corridor. One day I was there with my son and I looked up and saw a small group of ante-natal parents there on their tour of the maternity unit. I recognised the look on their faces , all thinking, please don't let my baby end up in here. I recognised that look because only a few weeks earlier I'd been on their side of the window, thinking the same thing. And I wanted to say to them, actually, it's not so bad. It is what it is. I have my baby, I live my life now 15 minutes at a time, and that's fine.
Maybe two or three times in the 16 years of my son's life, I've been reminded that I didn't have that last month of pregnancy, and that I didn't take him home within a couple of days. If I'd had that last month of pregnancy, I wouldn't have been able to take my baby home at all.
You do what is right for the baby. And what seems somehow wrong and scary now, will become your normal and that will be fine.