Can you pick out who was breastfed and who wasn't?
"Can you pick out who was breastfed and who wasn't?" No. Nor can I pick out those children whose mothers smoked all the way through their pregnancy, nor those children eating 5 times the recommended daily amount of sugar as most children doing this aren't fat or have rotten teeth.
To be honest, I find it odd that you'd even try to use such an unsophisticated argument to try to make a case that breastfeeding doesn't matter.
The bottom line is that the major health organisations see a lack of breastfeeding in both developed and developing countries as a public health issue linked to higher morbidity and mortality of babies and women, and hence put resources into both studying infant feeding and promoting breastfeeding.
And if it's considered a reasonable issue for the NHS and the WHO to put resources into I don't see why it's so outrageous that people outside these organisations should take an interest in the subject and want to discuss it.
"Until then I suggest we let women make their own decisions"
I think you'll find that we do. As it stands, no one has suggested that mothers forced to breastfeed. :-)