Why didn't Sam have a problem giving The Ring back to Frodo?

[Angry Brandybuck]

I just don't think Sam ever really thought of the One Ring as more than a magic ring, regardless of how serious all the talk was about it

I agree with this, and it fits quite nicely with Sam's chief reason for embarking on the journey to "see elves". Throughout the book Sam represents the normal, homely values of eating a good meal and always being polite and nice. This, in itself, is kind of its own sort of chivalry, or Hobbitry.

Maybe it is this sort of love for everyhting that is good in life is what foxes the ring, considering that it is an object created out of evil?