I guess I can see that, and I think in a "normal" life situation it would make sense and be therapuetic to toss the tempting food around. But Hurley's character (more than many of the stars) is very aware of his fellow castaways and their problems. He doesn't just stay by himself in the bunker and seems to hang out with many of the red-shirts and talks to everyone. He knows that others haven't been sneaking on Dharma chocolates the last couple of weeks and could have really used that food. I just found it really odd that he never even comptemplated that other castaways could have wanted it. But again, you're right that he is fighting a food addiction, so he probably was more focused on his own fight than the hunger of others.