I don’t think it’s anywhere near “most” cats that are lactose intolerant. The majority of cats I’ve had liked milk and had no digestive upset from it. One finished the milk from a human’s cereal bowl *every* morning for years (and sometimes got lucky when more than one human had cereal with milk for breakfast).
Please read post 29
There are many articles about the subject if you want to research a little. Just google "should cats drink milk" or anything along those lines and you can find out from the experts.