I completely agree with this that if we get rid of food not at the cost of health; we would have far less problems and issues to today's world. I think there is a possibility of greater human beings off food as "what we eat, we become that" so the energy to function the body smoothly without any side effects is needed; and in our current food habits; it is impossible to achieve; so if we could do something to get the same or better energy; but from alternative source; hopefully it would be the biggest achievement for us....I have heard many stories in India about "sages" who do not eat and are enlightened; however they do not live in society rather in recluse....I believe this is a feasible idea; but may not be easy...below is an link to an excellent book which contains "way" to start lifestyle without food and also includes many examples who have achieved that state...
http://www.scribd.com/doc/6205230/Li...e-Without-Food