no milk is never really bad. it's good stuff and cereal would taste terrible with water! dairy products are important in our diet assuming you do not have lactose intolerance or an allergy. as we get older we still need the nutrients provided by milk but many of those same nutrients can be found in other dietary items like vegetables. perhaps we do not need as much milk in our diets (it is high in calories) as many people drink. humans believe it or not are the only mammals on this planet that continues to drink milk after we have been weaned (of course humans have the ability to get it! ). talk to your medical provider dietician or nutritionist and they can help you determine how much milk would be appropriate in your diet.
is milk bad for you as you get older