Some people find that they are in better health when cutting out dairy entirely, or cutting back on cow's milk dairy. When you think about it, it is kind of weird that we feed our children relatively large quantities of a food that is designed by nature to nurture baby cows.
There are some who argue that modern dairy farming, particularly pasteurization, takes away some of the health benefits of milk. If you think about it, up until a century ago, people drank natural milk from local cows. The milk was fresh and full of living bacteria (both good and bad). Cows weren't fed growth hormones, or penned in factory farms and fed corn, or given antibiotics to combat mastitis because they were being milked in large quantities by machines. They were milked by hand, and cared for by family farmers. They were milked a few times a day based on the supply of milk that was natural for their bodies to produce. The cream was skimmed off and saved as cream or churned as butter. The milk wasn't manipulated into various % of fat, and milk was treated as a food taken in small portions, not guzzled in huge quantities.
Of course old fashioned dairy farming wasn't all sunshine and roses - cows that got mastitis could die of infection, and people did get seriously ill from drinking milk that was contaminated with bacteria. Milking cows by hand can be dirty and is a thankless job. That said, though, there are a lot of good living bacteria in live milk, and pasteurization kills that along with the good bacteria. That's why there is a growing movement to get back to raw dairy farming.
Anyway...many adults develop an intolerance to milk as they get older and it seems that for many children, cutting out dairy can help with chronic health issues ranging from allergies and asthma to skin problems to neurological and behavioral problems. Soy milk is a terrible product and should be avoided. There is too much to list here about why it's not a good thing to ingest but for most people, there are better options. Nut milks, for those without allergies to tree nuts, can be a good and healthy alternative to dairy milk. I like almond milk with cereal.
We have considered switching the kids to raw, whole milk from a local farm but just haven't pulled the trigger on that yet. They do drink 1% milk on a regular basis and the milk that we buy has no antibiotics or growth hormones. We used to buy organic milk but we just can't afford it at the rate the kids drink it, which is 3 gallons a week. I don't push milk on them (as in serve a glass at every meal) but they truly like it and choose it, so we have it.