1: How long have you been in the hobby?
Since 1997-1998. When I was a young lad...
2: How important is Fluff to you, relative to other aspects of the hobby?
Not as important as modelling, but more important than painting, tactics and gaming.
3: How devoted are you to the works of the Black Library? By this I basically mean what compels you to buy/read one of their novels, do you pick them because of the races involved, follow certain serials, on a whim, etc...
I don't read any BL novels, I've never really liked them.
4: How many codexes have you taken the time to read thoroughly, including older editions?
Eldar ed 3, 4 & craftworld.
Tau ed 3 & 4.
CSM ed 3, 3.5 & 4.
SW ed 5.
Dark Eldar ed 2, 2.5.
Tyranids ed 3, 4 & 5.
Space Marines ed 4 & 5.
Plus bits and pieces of other 'dexs
5: Do you enjoy postiulating theories, pondering mysteries, and writing your own works to expand your enjoyment of the hobby?
Yes very much so. I don't write any of these ponderings down because I've never been big on writing, but my favourite parts of 40k fluff are the 'open' areas which allow for reader interpretation. It's also why I dislike things that are "well documented", too much fluff leaves little room for imagination.
Stupid character limit.
When I was a young boy, I dreamed of being a baseball...