"At best, there might be some health benefits"
98% of female doctors breastfeed their babies. I think that should tell you something about the beliefs about breastfeeding in the medical community.
"As for the comfort thing, well there are plenty of other ways to comfort a two year old child."
There are many ways to comfort a child. But breastfeeding is one of the most powerful. Anyway - you've still not given any sensible reasons why someone shouldn't.
"The need to keep breastfeeding is just perverse."
Well that's your opinion. You believe breastfeeding an older child is wrong, despite it being something that was very common in the past in the UK, and is very common in large swathes of the world today. It's also never been linked with any disadvantages for children or for mothers. The opposite in fact.
On the other hand not initiating breastfeeding at all is something that is a very, very recent development in terms of human history. It's associated with poorer health outcomes and higher rates of hospital admission for small babies.
Can you explain why a physiologically normal and well established practice, which has never been proven to be harmful, is seen by you as 'perverse', whereas a relatively new practice which exposes some babies to harm, is seen as both reasonable and socially acceptable?
"spudulika - saw your study. I dont buy it, sorry. It may well be that the parents who breastfeed betond 6 months are more likely to be hands on types - hence better mental health of their children IYSWIM."
So people who long term breastfeed are more likely to raise happy and well-adjusted children because positive parenting practices are more common among these groups? Yes, possibly. There is an argument that it's not breastfeeding that makes babies better adjusted and more intelligent. It's that more intelligent and better adjusted people are more likely to breastfeed for a significant length of time.
That's not particularly flattering to those people who choose not to breastfeed is it though?
And it's also the case that this study did attempt to control for parenting styles.