Nooka, lots of people posted saying it was (I'm paraphrasing - will search for proper quotes if required though!) gross, unnecessary after a certain length of time, made them feel uncomfortable, etc, etc.
If you're on the "side" of long-term breastfeeding, to be told what you're doing is gross and unnecessary is unpleasant. Especially when there is enormous piles of peer-reviewed research to back up what you are doing and there is an awful lot of misinformation being bandied about by people who've either never breastfed or not breastfed beyond the first few weeks or months.
I wouldn't set myself up to talk knowledgeably about something I haven't the first idea about or only have limited experience of (as some on this thread have done), but breastfeeding is a subject that interests me greatly (I think it's totally incredible, tbh) and I do consider that I know more than most about it. To that end, I try to help people (NannyJo included, interestingly, when she was having bfeeding problems with her four-week-old last year) who are breastfeeding.
I realise that there are people who don't agree with my views on extended breastfeeding, and I fully accept that it's not for everyone, as, I believe everyone who has supported it on this thread does. But if we don't post our feelings on it, then the ingrained "yuk" response that so many people have to it goes unchallenged and people who perhaps would have breastfed long-term don't, because they don't know it's an option, or, if they do, they are put off by other people's responses to it.