Kosko has got it right, it totally depends on the source of the milk. If the cows are well taken care of, grass fed, etc. the danger from raw milk in very minimal. I've been drinking it for years with no problems whatsoever.
The reason we pasteurize it is because milk from cows on corporate large scale farms is usually dirty.
The reason we pasteurize it is because milk from cows on corporate large scale farms is usually dirty.