sprince, I do not know on what factual information you base your opinion on. Not all gel's are created equal and some might be high in sugar for calories, the better ones are not. They cost about $1 each and milk is less nutritional, not 10x's more. Also, milk will rot your teeth very quickly, that's why it isn't a good practice to let teething babies fall asleep with 100% milk in a bottle. What about lactic acid from the milk?
I am not saying milk does a body harm, I am saying your post is inaccurate and based on conjecture, not facts. Hey, we all have our opinions as we are entitled to but let's not post them as facts.