I never knew that adult cats were lactose intolerant and that milk causes worms. Since you stated the former, would please provide a link for more information on the subject. It might go a long way helping me with my research.I've never heard that milk causes worms in cats - I highly doubt it. All the professionals though say adult cats shouldn't be given milk (kittens need it) because for the most part adult felines are lactose intolerant. Milk will give them diarrhea. But there's always exceptions, and if your cat doesn't seem to have any tummy troubles, it's probably okay to let her have milk occasionally. There is a lactose free milk made especially for cats called CatSip, or you can buy human lactose free milk too.
Though I might not be sure on the effects of milk in cats, I would love to slightly disagree with you on the importance of milk to humans. Milk is such a necessaary part of diet that refering to it to be only suitable for baby cows appears to ignore alot of facts. Check here for more on the importance of milk in a human diet:I asked my vet and he says that it can upset our cat's stomachs. Think about it. Milk isn't really all that good for humans either. It is made for baby cows.