American women have NO modesty. In the third world, where everything is different and there are no facilities which accommodate this, of course they still do this in public.
It is NOT necessary here, and people who do it are just using their child to get attention! Not wholesome.
It may be about getting attention or it may be about the complete dismissal of manners and decorum in our society in general.
Too broad a statement - there are times when it is totally appropriate, but the woman should have the sense to use a little bit of discretion by minimizing the display. Breast feeding is best for most children and we ca't expect Moms to have their every action planned out so it never occurs in public. When done properly, it can actually help instill a sense of modesty in youngsters who observe it. Not every action which bares a part of a woman is an immodest/immoral/depraved action and we do no favors by trying to pretend that nature is not what it is. You can't teach a person responsible respect for sexuality by putting up an impenetrable shield.
There is no excuse for whipping out her boob(s) in public for all to see.
Exhibitionists