Shona spurtle (love your name btw - where doesh shur shean hide hish shpurtle?)
I totally agree with you that there should always be an assessment and challange of accepted ideas - its hard to do for both institutions and individuals, but asking - why are we doing this? what does it achive? is it really appropriate? but that also includes the new ideas, improvements and (horrible word!) modernisation you want to bring in too.
Monkeytrousers I think said it much more consisely than I managed - many people are turned off by the romanticised view of childbirth by some advocates
My experience of the natural birth movement is very much one of paternalism and magical thinking: somewhat like a cult!
you must educate yourself with the 'right' sources, you follow these rules and prohibitions (eg diet etc) you concentrate on positive birth affirmations, dont think about possible problems, (it makes them happen,) dont prepare for any change in plans , any alternative type of birth or any problematic scenario, thats like admitting failure, you will of course be able to enjoy, not feel or at least cope witht he pain, (hell, you might even orgasm) its a climactic defining moment for you as a woman, use your intuition, its not a rational thing...
The blame is on the woman if she fails to follow this script too - obviously she didnt try hard enough, her body was defective, she didnt do it right etc, and many women beat themselves up with these sticks when the promised experience fails to be delivered.
You dont need to buy into it but these ideas ore often presented when women are vulnerable and at a lifechanging point, (rather like cults again)and can be pleasingly nonspecifically 'holistic' and 'spiritual'.
I am mixing a lot of threads of argument here but its a complex subject. I really would love women to have the educationa nd support they need to make the choices that are informed by their circumstances and lives, and that meet the specific needs of them and their families.