I think LoveAngel makes a really important point. I am absolutely pro-breastfeeding, but while on the one hand the message that you must breastfeed to avoid seriously disadvantaging your child is now being poured out deafeningly by the NHS, the level of knowledge amongst the majority of health professionals to whom mothers turn for help is in my experience risible. This can leave mothers in a desperate state.
There are hundreds of examples on this site, and here's another: I was told by a hv that the pain I was experiencing couldn't be thrush because the antibiotics I was taking for my mastitis would have cleared it up . Five equally ignorant health professionals later a GP referred me to the breastfeeding counsellor at the hospital on the grounds that I probably had a bad latch. BC immediately diagnosed thrush.
To cut a long rant short, I suspect that a lot of knowledge about breastfeeding and its pitfalls was probably lost during the bottle feeding boom of the sixties and seventies. There seems to have been a lot of research undertaken subsequently on the benefits of breastfeeding but not on the mechanism, or problems associated with it, so we're left with pretty much nothing but the infuriating "baby to breast, nose to nipple, tummy to mummy" mantra, and the feeling that if we give up we have failed our children in the most fundamental way. If anything goes wrong - and there are A LOT of things that can go wrong, what help there is is often woefully inadequate.