I would not exist if my mother had been in the US or another location with private healthcare when she was pregnant with me. She had a tough pregnancy and had to take a significant amount of time off work and was on bedrest for approximately 3 months. During those ~3 months, she had a medical professional come to her home every day (her midwife and doctor alternated days). This would simply not be possible if healthcare were not free at the point of care as it is in the UK and many other countries. I don’t know much about the postnatal care, and I know things have gotten worse in the UK over the past decades, but I’m eternally grateful to the prenatal care that the NHS provided.
This is not entirely unique situation. There is insurance for all of the above. It's just not everyone has access to it, but I'd wager if you don't then you like shouldn't be having kids.