I understand your thinking. It's admirable to analyze the "whys", "hows", and "whats". Yet like so much I see here, much of the groundwork has already been thought out by many professionals, educators and scientists.
So just to let you know you're not off the mark (but to keep you from wasting any time reinventing the wheel), here's some facts...
We choose to eat for many reasons. Appetite, taste, price, nutrient content and health beliefs, availability, schedule, social and religious inclinations, etc. All things being equal, most folks choose TASTE (yes, instant reward). Maybe you can check out "Eat It" by doing a search here on the site.
Foods are technically substances of plant and animal origin that can be taken into the body for energy and nutrients (not the same thing) for such things as growth, repair, functioning, etc.
I think that a simple rule to address part of your thinking is to go for minimally processed foods. The closer to what you might find in nature, the better. Whole fruits, vegetables, lean meats, dairy, whole grains... each of these things lacks the processing of most of our grocery store food products. (Hmm, try searching for the "Frankenfoods" article as well.)
By contrast consider what we've done to these simple foods: fruit pies, salty discolored canned vegetables or French fries, soft fatty brger sandwiches, sugary flavored dairy products, stripped refined white bread... you get the idea.
Simpler is better.