[Mithadan]

In thinking about this issue, one must resist the temptation to categorize the Ring's influence within modern context. The Ring is not chemically, pharmacologically, physically or (exclusively) mentally addicting. While Middle Earth is, "historically", our Earth, it is different in a markedly important aspect. Preternatural power, call it magic if you will, though in some respects Tolkien seems to make a real effort to avoid "magic", perhaps as a writer would avoid a deus ex machina. The Ring has a power that deeply affects its wearers. Its attraction is "like" addiction, but it is something very different.

The Ring clearly tends to separate its bearers from humanity and fellowship, at the least as a side effect, though invisibility is clearly a barrier to interaction. Candidly, I never thought of this. Instead I ascribed Gollum's inability to get along with his family or anyone else to some inherent flaws within him exacerbated by the corruption caused by the Ring.