I used to be on the opposite end of the spectrum than most people. I disliked eating. In the past I was very skinny (I still am skinny, though not as bad), and couldn't put on weight no matter what or how much I ate, and I didn't get much enjoyment out of food, eating seemed a waste of effort. My skinniness was never a physical health risk, but it was a source of much discontent for me. I often thought how nice it would be if humans didn't have to eat at all.
These days are different; I enjoy eating now, and once in a while I actually enjoy cooking (where before it just annoyed me, it seemed like a waste of time). Along with the change in attitude comes a change in my ability to put on weight, though I've still got a way to go before I'm no longer underweight.
btw, I'm not so sure a 'magic pill supplement' would be healthy. Our digestive system is used to processing food. There could be problems if it had nothing but pills to process for extended periods. But then I suppose if we could produce a pill that would provide all the nutrients our bodies need, in a form that could be absorbed, and in a way that prevented certain combinations of nutrients interfering with the absorption of other nutrients, then I guess we could deal with any ill effect on our digestive system. Yes, at this stage magic would be required. (you'd also have to be prepared for lots of people screaming in horror at the thought of not eating anymore
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