Yeah, and at the moment the evidence is trending solidly towards there being only minimal difference between formula and breast milk, and that the differences lie only in the short term (e.g., slightly fewer bouts of digestive upset for bf babies). There's very little credible evidence of any long-term difference for the kid. Though the evidence for the benefits to mom -- like the reduced breast cancer risk -- are still worth considering, probably. There's an interesting chapter on this in Emily Oster's most recent book.