I used to eat food. I still do, but I used to, too.
You have probably heard of Soylent, the liquid meal replacement where you can conveniently get all your balanced nutrients by just drinking liquid Silicon Valley. I mean, you've already outsourced all your other chores to my fellow startups–don't you want to save another two hours per day and eliminate all superfluities?
No? Yes? Well, it's not for everyone, but I sure would like more time for my important stuff, and I've already eaten food tons of times. Plus, if I can have my default meal be a healthy one, I'll sacrifice extra tastiness (which is why I don't eat dessert). I'm in. Forget eating! Yet...
I like Soylent, but it takes a lot of trust in nutrition science to say, "Let's just combine a bunch of individual micronutrients that match the recommended daily allowances, since those are exactly what all humans need, right?" Never mind that some of the RDAs were established by a handful of weak studies–you still have to believe that not only did we get the nutrient levels right, but that those nutrients are all you need, and that they work in isolation, in the specific forms that are included in your Science Drink (which may not be bioavailable or bioequivalent).