I consider myself a fan but not approaching nerd status like those I've gone to school with.
I've read the trilogy and the Hobbit two or three times, watched the Jackson LOTR films countless times and am waiting for the extended edition of 5 Armies to be released so I can have a 6 film viewing marathon!
1. If by inclusive do you mean is there something for everyone - then no, not at all. But is any book truly inclusive that way? It satisfies what the genre and plot needs. Jackson does well in correcting a lot of that though.
2. I don't have kids but I read the Hobbit in school in grade 5 and the trilogy in Junior High. Seems about right.
3. No, but that kind of thing is my bag. If it's not your thing, it's just not your thing.
4. Just the LOTR and the Hobbit.
5. Not a gamer.