Why You Should Never Buy Skim Milk I've always loved milk. As a kid, it was 1%. I ate cereal for breakfast every day and had a glass of milk with every dinner. In college, it was skim. After being dreadfully cliché and gaining a good 15, I bought the blue-capped bottle like my waistline depended on it. Now, thankfully, I only use whole. Here's why. 1. It's not as healthy as it's jazzed up to be. The whole low-fat diet has been disproven.