Many years ago, I learned that babies and young children need full fat milk to achieve proper brain development, so I gave them whole milk, except for one who had to have soy formula. Over the years, I sometimes switched to 2%, but I’ve gone back to whole milk for several years, now. Of course, my children are all grown now, but my husband and I still drink whole milk.
For a while, I kept reading that farmers give low-fat milk to pigs to fatten them up, so I felt justified in avoiding what seemed to me to be watered-down milk!