bobby49- your comment that you never run out of food and the LeConte ranger example and the "his excuse" comment, was taken by me that you thought running out of food was poor planning. If I misinterpreted, then I apologize. I just wanted to say that not everyone who "runs out of food" is making excuses for poor planning. Some of us actually plan to run out of food.
Accepting some hunger vs. 100% assurance you will not run out is a personal choice. However, if either is unplanned, then you need to think about why this happens. Personally, if I never had an appatite the first two days, I would then cut those rations in half. If I knew I regluarly cut my trip a day short "hot to trot" for that buger, I would accept that quirk and take less food. But I think we all subconciously "ration" as we go, regardless of how we cut back, to avoid that hungry last day; or throw in more food the last minute when the food pile we planned looks too meager. It is human nature. To some degree my choice to minimize food and water is coming into backpacking from climbing, where extra weight (particularly water) is simply not done because of the "speed is safety" philospophy. The other end of the spectrum is the "be prepared boy scout" philosophy. I do not think there is a right or wrong here, just a personal choice as well as each has its appropriate place.
I have to be pretty hungry to beg food off others. I have meet a few backpackers at rest stops who spread out their extra food and try to give it away. I do not want to carry the extra any more than they do so turn down the offer. I actually know someone who uses "beg and plunder bear boxes" as an actual strategy to supplement.
By the way, IF I have a few days food left, I just stay add to my trip and do more exploring until the food is gone! This is one advantage of being retired - no job to have to go back to and my family is trained not to freak out unless I am more than two days late.