The following picture, from the International Baby Food Action Network website, shows a mother feeding her twin babies. She was told that she wouldn't have enough milk for both, so she breastfed her son and bottlefed her daughter (who died the day after the photo was taken).
UNICEF estimates that reversing the decline in breastfeeding would save the lives of 1.5 million children per year.
In many parts of the world, bottle feeding isn't simply a "choice" as it is in rich, Western nations. It is literally a matter of life and death.