janhunt:
While there might well be plenty of evidence supporting that position, I suspect this guy's views on parenting would be vastly out of sync with mine if he defines "totally committed breastfeeding" as three to four years. Nothing against folks who choose that, of course.
At this point in my daughter's life, I am less interested in expert opinions based on many years of experience and more interested in expert opinions based on hard data. Years of anecdotal evidence, even from an expert, is still just anecdotal evidence.
That said, we actually are shooting for 3 year spacing. I'd prefer 4 years, but I'm 36 and want the sleepless nights over with sooner rather than later. I also get a little panicky over the increased Down's risk, even if it is still remote.