Ton, I didn't want to bring up the specific pros and cons because the thread isn't about that, and because I don't want to be down on those choosing pain relief. If a woman knows the side effects and feels the need for pain relief is greater, then she should have that choice, I don't judge because I made that choice when after 2 days of contractions, 4 hours on synto with an OP baby and still only 4cm, I was throwing up with the pain of every contraction. I've been there, so I can't judge.
I'm sorry if my turn of phrase seems judgemental, it's not meant that way at all.
I acknowledge that a woman without pain relief may need support to help her through the hardest parts, I know labouring, with or without drugs takes strength and resolve. I also know that the right support and encouragement can really take the edge off. I certainly would never, ever use "failure" to describe any kind of labour. The process should not, IMO, be judged against any external yardstick.
Women in transition do say things they don't mean, won't remember and allsorts. "I don't want this baby", "I want to go home" are fairly common. That doesn't mean she should be completely ignored, but it should be understood that she may prefer to not be taken at face value, for that little while (a choice that she needs to make in advance and put on her birth plan).
I don't really think disappointed is too strong a word when some women who's choices in labour are disregarded and the most "trivial" expectations broken end up with PND as a result. I have a fairly healthy attitude to my birth, if I had the birth I planned neither of us would have survived, but I am still saddened by the effect the opiates given during my EMCS had on my baby in the first precious days, so I am sure I would feel at least that disappointed if I had been given drugs that I requested in a confused moment of panic, that I ultimately could have done without.