I've always thought of Gollum as more of a tragic figure than actually "good" or "bad."
I read the series 40 years ago in college (never saw the movies, blasphemy, I know. Mea culpa). I remember a passage where Gollum was looking at his reflection in a pool of water, and saw the person he used to be. Again, 40 year old memory, may be completely wrong lol. He was the way he was because of the decisions he had made throughout his life.
We can relate Gollum's experience to our patients (and thus make it "Nursey") by remembering that they have the right to make decisions. Even bad ones.
Some eventually make good decisions that improve the quality of their lives. Some continue to make bad decisions that will diminish them as Gollum was diminished.
So, is Gollum good or bad? No more so than anyone who has set upon a path that magnifies his most negative qualities.
And this is probably the most serious I will ever be in here lol.