I think (and as Rhea says) at the end of the day if you want a natural / drug-free birth you have to set yourself up for one, through the right support, choice of carers, birthing environment, pre-birth education - the works. It's all good rocking up with a birth plan for a natural birth, but you have to do the footwork first and really believe you can, to truly get there.
I could not agree more - if I had not set myself up for it I would have caved as so many women you have seen Kelly. I had had major abdominal surgery in pregnancy (ovarian cystectomy with a mid-line laparotomy), plus the previous pregnancy was ectopic! AND I was 38. Yet I did not get medicalised or even patientised, thanks to my doula and husband. We all knew what we wanted - it was all about the baby, keeping him happy, and that focus really worked!