Milk is absoultey great for you.
Full chain of amino's and some casein protein, you're muscles will be laughing.
Maybe switch to skim milk, and if you can't stand skim then 1%.
Milk and coke are two completely different things. It doesn't matter if they have the same amount of calories (or if milk has more), the fact is, is that coke is empty calories..doing nothing but dehydrating you along with throwing a bunch of sugar into your system (and whatever else they put in it).
While with milk, it is providing your muscles with amino acids, protein and vitamin D (and calcium). It gets absorbed.
Milk good.
Coke bad.