Pubmet doesn't agree that whole milk has good fats
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001224/
But wikipedia claims that recent research blames artificial trans fats, not natural cis fats, for artery disease.
And skim milk tastes better than the fatty stuff. It turns out that taste is subjective and modifiable based on life experience. (That is why coffee is tolerable to adults)