What about Samwise?

[NinjaFerret]

Sam... was a good hobbit. His feet were firmly on the ground. He was so truly pleased with himself and his life, he didn't want anything; he was happy with what he had. The same goes for Pippin and Merry. Everyone else in the Fellowship had some greater scheme in his mind. Gandalf wanted to destroy Saruman, Boromir wanted to free his lands, Aragorn was troubled about being king, Gimli wanted to restore the power of the dwarves (he also did not trust Legolas), and Legolas did not trust Gimli. There was much tension and negative feelings within the group; they were thrown together out of desparation (sp?). I got the feeling that Sauron fed off of fear, mistrust, division of purpose, and chaos. So when he encountered beings such as the hobbits, who were so simple and happy with who they were, he did not know how to deal with it. Therefore, he was rendered impotent. That's my hypothesis.