Farmers almost always drink their own milk. BIL used to be a dairy farmer and many in the family got milk from him. The danger usually comes from cows eating grain. Never know for sure what might be in the grain. Cows eating grass or hay that hasn't been sprayed with anything are usually pretty healthy and in spite of what you read all the time, most farmers do NOT regularly inject their cows with hormones or antibiotics or anything like that. The only time BIL ever needed to give his cows antibiotics was if the cow had an infection and her milk was dumped out. No self-respecting farmer would allow milk like that to be used. It's against the law as far as I know.
The milk is fine, like I mentioned, when it's a grass fed cow and it's healthy. Of course, with all that cream mixed in, it's always quite fattening. I never cared for the taste of it, it does taste different, but farmers are used to it. As it turns out, I have issues with dairy so I don't have to worry about it anyway.