What was Frodo's temptation

[Ibrîniðilpathânezel]

I tend to think that the notion of the Ring offering Frodo the safety of the Shire is accurate, since that was what he believed he was doing by continuing the quest. But the farther along it got, and the longer Frodo resisted any temptation of power it might offer, I think It started working on that desire through delusion. Especially once he was within the borders of Mordor, I believe the Ring started to work on him through despair, so that he might start to believe that though it appeared the only way to save the Shire would be through the destruction of the Ring, he would, in despair, "realize" that the only way to save the Shire was by claiming the Ring. Something made Frodo snap at the very end, and as he had never been a person who desired power over others, he either succumbed to the insanity of believing he could be that kind of person, or to the insanity of thinking that only with the Ring could the Shire be saved. Possibly a combination of both. Tolkien always did say that Frodo failed the quest (even though he achieved a kind of moral victory by giving all he had to give in attempting to fulfill it). Succumbing to despair in such a way would, I think, be a significant failure.

Did that make any sense? I have my doubts....