I guess there are a lot of people in the world who don’t have dogs.
I pour milk so that the cereal is swimming in it precisely because I like to drink the leftover milk. What can I say? I like milk and than Og I’m not lactose-intolerant.
I put it back in the big gallon container. I hardly consume any of the milk, so there’s always plenty left. I only have to pick up a little pint container once a week to top off that gallon. The milk takes on it’s own unique characteristics from the Chocolate Frosted Sugar Bombs. Sometimes I’ll pour a glass just to taste and put the remainder back into the gallon container. Isn’t this how everyone does it?
I had no idea people threw the milk away. I drink it or give it to the dog.
Count me as another that had no idea that there were people who dumped it.
There are millions of kids starving in (insert region here)! Ship it to them! 
I was thinking you were talking about cereal. As in, cereal and milk, regardless of ratio. I guessed you ate cereal despite disliking it because it’s convenient for before work or something.
A mouthful? Yeah. It all goes the same place. As I said, before, though, I do love milk. And I do love flavored milk, too. Chocolate, strawberry, banana. So if there are a few pieces of flavored cereal in my milk, it’s all the same to me.
I love my dog, but he ain’t gettin’ my milk 'n cereal. 
I would simply have been admonished to think about all the children starving in Europe. But milk was never one of the problem foods at our house. (Cereal with okra or liver would have been problematic.)
Sounds like a lot of people eat milk & cereal but don’t really like either. You’re grownups! You can have something else for breakfast!
… /gag
I don’t eat butter on its own either. That doesn’t mean that I hate buttered toast.
Then brother, you ain’t livin’.
It never occurred to me that people don’t drink the milk. That seems to be half the experience of the cereal. If you don’t like the milk, why wouldn’t just use less so none is left over?
I thought this thread was a joke at first.
Never in a million years did it occur to me that anyone didn’t consume all of the milk with the cereal. I can’t imagine any parent letting a kid get away with that.
But, it’s a free world. I choose to eat the cereal and any leftover milk in the bowl. I like milk but rarely drink it anymore unless it’s with cereal. I can’t recall the last time that I had a glass of milk.
I’m trying to wrap my head around why people give a shit about it.
Many Dopers either grew up in or shortly after the Great Depression or their parents did, and back then wasting food wasn’t a question of a little money. It meant you might very well go hungry later that week.
There are also ecological concerns. Milk comes from dairy cows. Cows require a large amount of feed, and feed (hay, grain, soybeans) requires large amounts of land, water, fertilizers, pesticides to grow. The ideal would be to grow only as much as we need, leaving more water and land available for other uses and keeping pesticides and fertilizers from leaching into water supplies and washing into river systems and the ocean.
Also, I usually drink my cereal milk.
I just don’t put that much milk on my cereal in the first place.
Even though I’m one of the leftover milk slurpers, and I never even imagined anyone would throw more than a spoonful of milk away, I pretty much agree with this.
From what I know about dairy cows (through many years of Hollywood movies) is that dairy cows have to be milked regularly, or they will explode or something. So if there was a sudden drop in demand, dairy cows will be bursting nation-wide. Oh, the bovinity!
Or, they will be reassigned to one of the fiendish Temple Grandin cow death camps, slaughtered, and their skin made into lampshades or something.
I doubt that half-a tablespoon is going to make or break the dairy industry.
Speaking of, milk isn’t good for cats. (I used to feed my leftover milk to my cat when I was a kid, but back then I didn’t know any better)
Could just be urban myth, but I’ve heard people say milk isn’t good for most mammals once they leave infancy, humans included.
I think I read that in a topic about why many asian people are lactose intolerant: somewhere in Europe some people who didn’t outgrow their tolerance for dairy after infancy bred, so we evolved tolerance and asia didn’t. No idea if it’s true.