Luthien, Huan and Sauron

[Rhudladion]

Sharku, (meaning no disrespect o mighty member number 3), like Frodo and Gollum? Sauron had done more evil deeds than Gollum had. Frodo let Gollum go because he thought that he would just go into the Mountain and toss the Ring into the fire. The slaying of Gollum was unnecessary (so he thought)

If the War would have turned for the better by the slaying of Gollum then I am confident Frodo would have done just that for the good of Middle Earth.

Eomer of the Rohirrim, I see your point, but there is not doubt in my mind that pity itself played a much larger role in Frodo's release of Gollum than did Frodo's belief in his ability to accomplish the task. Furthermore, it seems a shaky assumption to say that Frodo did not think killing Gollum would greatly benefit the cause; especially with gandalf always lending obscure credibility to Gollum's "part to play".

Therefore, I think "o mighty member number 3's" assesment and conclusion is pretty much right on.