[Inziladun]

Nice one, Mithadan!
Sauron obviously wanted the Ring as an instrument of power, but would he have been in thrall to it in the same manner as others who desired it?
After all, it was basically himself, wasn't it? The power and will within the Ring were at first part of him. Gollum, Isildur, Boromir, and even Saruman were striving to attain power that was not native to them in their beginning, whereas Sauron was attempting to regain that portion of his divine ability he had lost.
Sauron certainly never gives any indication that he becomes as pitiful as Gollum in his desire for the Ring. In fact, he was able to rebuild his strongholds and armies , and manage a war quite adequately without it. It is to me beyond argument, however, that lust for the Ring was in the end his undoing, as the thought that Aragorn or someone else might claim it caused him to mismanage things at the end and allow the Ring-bearer into Mordor.