Pasteurization kills all of the bacteria in milk, including beneficial bacteria. So that eliminates it as a source of beneficial bacteria. Some yogurt is a good source, if it has active cultures. I eat yogurt occasionally, but I don’t know how anyone can eat it every day.
Mass produced food requires certain procedures which aren’t healthy, but are necessary to maintain costs. That fine, if that’s what you want. I usually choose that route myself. But there are times when I’d rather spend more and get healthy food. Milk is one of those things I splurge on. I love real milk; the taste, the texture, and what it does for my body. If I could afford to be that picky about all of my food, I would be.