I'm sorry, but I feel I just have to write this. I know you didn't mean it mears, but I am a bit hurt by your assertion that it is personal sensitivity. I know you meant it in a medical rather than a personal or emotional way, but even now I still find that kind of comment hard to deal with. I was praised by my midwife and dp throughout my labour for how well I dealt with the pain. Even in stage two (much to my surprise) I wasn't shouting or screaming, I managed the pain calmly and with no problem. So I figure that I am a person who can generally handle pain.
However, the pain of breastfeeding was so intense that I was crying throughout the feeding, afterwards for some time because of the lingering pain and for up to an hour before feeding in anticipation of the pain (and as the pain built up). I also could not hold my gorgeous newborn son because of the pain, I couldn't shower, walk fast or turn over in bed. And I was beginning to hate him because of the pain he inflicted on me. I don't understand this now, but I also never thought to mention (and noone ever asked) that my breast milk was pink and lumpy - I assumed all breaskmilk was as I'd never seen any before! I now know that it wasn't just ordinary breastfeeding, but sick boobies that was causing the pain.
But I had so many people say to me things like "it always hurts" and "it depends on your sensitivity to pain" that I put up with it. I wish someone had said (as dp eventually did) that nothing could be worth that kind of agony. If I had received the simple advice, "if it hurts, see your gp and describe the pain" I would maybe have been able to breastfeed my son. Or if rather than these platitudes someone had asked a specific question, like "describe the pain" or "can I see some of your expressed milk"?. Who knows.
I'm not meaning to have a go, because I think I understand the sentiment of what you are saying (and for the record, breast is absolutely the best, which is why I get so upset about the fact that I couldn't). I'm just saying that women need as much support as possible, and anything that might be interpreted by a woman who is desperate to breast feed as "shut up and put up with the pain" could be counter productive. I know that that is not what you said, but it's how a hormonally imbalanced and desperate new mum might interpret it (as I did)!
Sorry this is so long. Still sad at having failed at breastfeeding!