Monsanto is a frankly sinister organisation with a gigantic, global footprint - the research on Bovine Growth Hormone is downright scary. A lot of members of my extended family have sensitivities to not only lactose, but the casein/protein in all animal milk (though goats milk is supposedly easier to digest).
BUT my kids love their dairy! We buy organic fresh milk from 360 or Wellcome and keep long life cartons in the cupboard when it is sold out (frequently).
Unfortunately it is all homogenized and there are some compelling arguments to avoiding homogenisation! I would be all for buying raw milk if I could, however it's illegal for farmers to sell it here.
The costs are a nightmare, but 360 and some Park n Shops often discount their organic meat and yoghurts (I go later in the day) and tubs of organic Horizon cream cheese are more affordable than organic hard cheeses and great for cooking and babies puree's etc.
Fortunately my kids have no allergies or behavioural issues. If they did, dairy would be the first thing I would be cutting out. As it is I try to keep them fairly free of refined grains, refined sugars, preservatives and E numbers etc.