You have to remember though, that "years and years" ago, women and babies died in childbirth much more often than they do now. Things like breech births, pre-eclampsia, shoulder dystocia, multiple births...women and their babies generally survive these, with the help of doctors and professionally trained midwives. It's thought that the "natural birth" mantra, and the reluctance to perform emergency c-sections, may have contributed to many of the tragedies highlighted in the recent maternity scandal at the Shrewsbury birth centre.
Also, women are having their first babies at a much older age than before, it's not uncommon to see first-time mums in their 40's. They're also getting larger, there are lots of issues with obesity, gestational diabetes, mobility problems etc. Babies are bigger, we're better fed now, so our babies grow much larger in the womb.
I do think that there is a great need for women to be better informed about childbirth though. The odd online antenatal class, and breastfeeding lecture isn't really cutting it. I don't think that self-penned "birth plans" are helpful, so many women are left feeling like they have "failed", or were cheated because they didn't end up with their dream water birth, surrounded by scented oils and relaxing music. We need to prepare women for the reality, to show them how to help themselves, by being informed about how their body works, how to use relaxation techniques when the going gets tough, how to understand what is happening during labour, and why, sometimes, things don't go according to plan. We also need to make sure that robust follow-up plans are made, women may need help after suffering perineal tears, they may need debriefing after a difficult delivery, they often need feeding support for more than a few days post-birth. Instead of wasting cash to print new signs and leaflets that don't mention the word "woman", and sending staff on "diversity" training courses, they could use the money in far better ways, to support women at a time in their life when it is most needed.