From what I've gathered, breastfeeding does not provide any more physical or mental benefits than not breast feeding. Obviously, I am just stating research. Each parent has to decide for themselves what they think is best.
Research sponsored by who? Nestle?
I've seen plenty of pro-breast milk research too. I wouldn't read much into either side with the exception that breast milk is what babies were intended to drink.
The only downside is mischeivous women putting breast milk in your morning coffee and giggling about it all day.