The key FDA claim: "There are no beneficial bacteria in raw milk for gastrointestinal health." And their support for that is that "Probiotic microorganisms must be of human origin in order to have an impact on human health (Teitelbaum and Walker, 2000). " So with this logic we sterilize milk to reduce harmful bacteria from commercial farming methods with the theory that there is nothing beneficial in raw milk. Congratulations on that logic

The real reason for pasteurization is the benefit to large scale commercial dairy farming. Non-pasteurized milk will spoil soon, but once you kill all the bacteria, it will stay longer, thus allowing a supply chain and warehouses full of "milk" at Costco. I am fortunate enough to be able to drink it regularly, but with US laws intended to support large scale commercial operations, I don't know for how long.