Wow!! Have you ever read something someone else wrote and recognized yourself?? I just had that experience 27 times over!
My Calibre library only has about 200 books, my Sony has 35 or so loaded, my eDGe (relatively new) has a mere 14 at the moment. I can almost gaurantee that I will add more books than I finish, in perpetuity.
Addiction? Probably. Seeking cure? Nope. Sorry. I am having too much fun!!
And it's so much cleaner than my houseful of books!