Not long ago (maybe some people still do) people would say "he smoked a pack of cigarettes a day and lived to be 95, there is nothing wrong with smoking." That is called a attribution error. "I was fed formula and my IQ is 130, there is nothing wrong with formula." If we say these kinds of things we are contributing to the problem of how people think about formula and human milk. Until people start correcting attribution errors we aren't going to see the kinds of changes we would like to see in breastfeedfeeding behavior.
People make poor decisions. My grandmother, mother, and sister think breastfeeding is gross and never considered it. Women almost always have their minds made up about breastfeeding before they get pregnant, before they get any information about breastfeeding. If a woman doesn't breastfeed or weans early she usually makes excuses for her behavior. If her child gets sick from a disease that may have been prevented by breastfeeding she doesn't take responsibility.
Making the decision to not breastfeed or to wean early is complex. Women aren't ignorant, they know breastfeeding is best. Some women will let their man tell them not to breastfeed. There are sexual issues, modesty issues, poor birth practices. Women have to work outside the home and still take care of the home and family. Books and experts tell mothers that they must let the father feed bottles, they must get out and let others feed bottles, they need a break. Half the babies in the US are born to single mothers, visitation and custody would be involved. Over half the babies in the US are unplanned. One forth to one fith of the babies in the US are born by C-section, a major surgery. Babies are born early and some go to the NICU. Moms get sick.