I don’t have any actual learning on this subject, but I do have anecdotal information. I grew up on an old-fashioned farm, and we drank raw milk with every meal.
My view today, shared with my siblings, is that drinking raw milk is nuts. We never contracted any serious diseases, but as a child I contracted diarrhea on a fairly regular basis. I believe that this was primarily due to the raw milk. I almost never drink milk at all today, except occasionally with cereal. (I do eat yogurt, cheese, and ice cream.)
As for the benefits: I didn’t really care that much for the taste of unhomogenized milk, especially when it had a little cream floating around on top. The cream itself was quite good, not by itself, but when put over oatmeal or used to make whipped cream. We used Jersey cows when we wanted cream, as these produce a richer milk than the Holsteins that are mainly used in commercial dairies. And the supposed health benefits? The one thing I can say for sure is that there are plenty of very healthy people who have never tasted raw milk.