I can sense the dismay and almost-anger is some posters here, and I think it's important to say that I don't think anyone here is talking about women who cannot breastfeed for physiological or medication reasons. I am pretty sure we're talking about women who can otherwise breastfeed but give up for one or a combination of the reasons Kelly listed.
I find the 'nipple nazis' tend to be MCH nurses and vigilante midwives (who are notorious for conflicting advice) and the tag has somehow stuck to ABA, quite unfairly. I say unfairly because even the ABA forum, has a thread all about 'when breastfeeding doesn't work out'...how can you justifiably call ABA the 'nipple nazis' when they are real believers in 'breastfeeding is for baby, not baby is for breastfeeding'? If there is no breastfeeding, baby has to eat something else!
As someone who used the phone twice during my initial attachment problems, I have to say that you need to know that there are lactation consultants available. The second time I called someone I realised that my particular problem needed to be seen in person, because according to the 'instructions' I was doing everything right. I was right in the end - it was not my fault, it was DS's tongue tie! Definitely a visual diagnosis, unless someone has the foresight to ask 'can your child stick his or her tongue out over the gumline?'...which no-one thought to ask. But I persevered because I knew that once I did that, it would be fine. As much as I didn't have the anecdotes before DS was born, afterwards I was surrounded by women who would swear to me that 'it just clicks and gets better' (for attachment problems) and I trusted that implicitly to get me through.