It also seems certain that there are advantages to being breast-fed. Exactly how strong these are is hard to stay -- as far as I know, all the research is observational, and so it becomes hard to tease out what is the effect of breast-feeding and what is just coming along for the ride (correlated w/ the type of person that prioritizes breast-feeding).
It's still a worthy goal to have a society that makes it easy for women who want to breast-feed to do so.
(And I hear you on the moralizing, which is obnoxious. Let the parents decide what is best for their baby and life situation; it is not anyone else's business.)