I have been mulling and mulling over all this. I was an active birth evangelist pre-DS, and know that it is the approach that feels right for me. I am also in complete agrement with Aloha and feel passionately about informed choice. In that context, bandying about of overall statistics are pretty much meaningless for individual women - CS's can be the perfect solution (for Aloha) or a devastating (Marina), vb creates similiarly diverse experiences. Safety stats will depend on the individual circumstances of the woman, her pregnancy, the skill of either mw and/or consultant - even on whether they are having good day, tired or whatever.
So, where do our strong views come from? I can't deny that there IS a moral hierarchy implied, along the lines of Aloha's bus journey analogy, and I would admit to suscribing to that pre-birth. Why? For me it may have a lot to do with the roots of 70s feminism when I was in my teens. I was deeply affected by the horrific reports of 1950s medicalised birth - the green gown, stranded beetle, legs up and enema version which sounded like humiliating torture. It affected me so deeply that I think it put me off the idea of birth altogether, and certainly fuelled my own vehement feminism. And then came 'Our bodies Ourselves' and Shiela Kitzinger, simultaneously accusing doctors of medicalising women into a male controlled birth process, and developing 'active birth' and a 'woman-centred' midwife led birth experience, with all the stereotypes that went with it. And, tbh, it was only this version of birth that I could bear to accomodate in my imagination. To the point where I refused to go on thhe ante-natal hospital visit or pack a bag in advance as a contingency for my planned home waterbirth. Lurking in my unconscious mind, 'feminist' women did it with breathing at home, others 'succumbed' to a male conspiracy.
Of course this is now as outdated as the green gown, and a ridiculous polarisation. The only way forward now is a woman-centred approach which enables the woman to take a strong active informed choice about her options and own particular circumstances. Birth HAS moved on, in hospitals, and all methods of birth are now, essentially, safe in the right circumstances. IMO there is still a case to be made for more dignity for labouring women in hospitals - and much of that depends on the will and resources for women to be listened to - whatever their choice. And I think we should make sure that the lurking 'moral hierarchy' is seen as what it is; an affront to a woman's right to make choices about her own body - -and an anti-feminist one at that!