I have just come across this thread and am posting without reading it in it's entirety so apologies if I repeat what someone else has said.
I am sure there are very few midwives who believe women should pay for epidurals - this motion will be aimed at generating debate which has certainly been successful as far as mumsnet is concerned. It will do the same at conference.
Women freely get epidurals when requested. Unfortunately though, in the many units you can get an epidural in, you have to hire your own pool if you want a waterbirth. Is that fair? A pool is more likely to facilitate a normal birth. Epidurals often cause a cascade of intervention, which otherwise may not have occured.
As a midwife, I have on often recommended epidurals to women who are having protracted labours or high blood pressure.
I do get frustrated when women demand epidurals on admission, prior to labour even being established. An epidural that is sited too early impacts on labour. The pain of labour is replaced by the pain of forceps deliveries or C/S. However, I would not deny a woman choice, but unfortunately very often it is not based on anything more than the belief you have a pain free labour. In my experience, often an epidural reults in shivering, vomiting, blood presure falling, baby's heart rate falling, labour slowing, drip needed to get it going again etc etc.
Epidurals can be absolutely wonderful where labour is not progressing well for whatever reason. They can be horrendous when they interfere with an otherwise normal labour. There is no getting away from the cost either way. Some would say that the presence of one-to-one midwives in labour would reduce the need for epidurals. It is a chicken and egg scenario though. As long as money is used as it is for interventions which are unecessary, there will be no spare money for midwives.