Why did Frodo Volunteer to take the Ring?

[doug*platypus]

On the subject of fate or destiny in Middle-Earth, another thread proposed that Elves were subject to fate, whereas Men were not, and had Free Will.

My own thoughts developed into an idea, related to Bilbo, that Men and Hobbits had Free Will, but since they were created by Iluvatar, they were created with certain tendencies. While Frodo may not have been directly compelled by Iluvatar or the Valar to offer to take the Ring, it's possible he was created to be likely to take the Ring. Possible, since Iluvatar knows the entire history and future of the world.

I like the original thought, though:

Why did Frodo volunteer to take the Ring, because he felt that it was his duty or because he didn't wanted to be kept away from the Ring.

Frodo did show great reluctance to be parted from It... unless you believe the FOTR movie.