It's a shame that breast milk has had to become such a hot button topic recently. It causes a lot of anxiety to women who simply can't feed their babies by breast.
My mother told me once she felt horribly guilty over stopping my youngest sister from breast feeding after three months, instead of the recommended six, but that she had developed her teeth early and the process was extremely painful. My mother tried to express the milk but that didn't work well and storing breast milk is difficult.
The thing is, if it can't happen, it can't happen. It might be the best thing for all children to grow up existing on a nutritionally perfect diet, but that's not going to happen either. And I don't think it's worth the anxiety and guilt that women feel when they can't measure up to a high standard through no fault of their own.