Can't Book Series Just Go On Forever???

So i'm a reader... i have a book shelf FULL, i mean PACKED 2 rows deep on every shelf of books... i have to have SOMETHING to read at all times... i prefer series, though i think i have a hard time with series ENDING. lol I first noticed the deep attachment that i seem to develop with series when i read the Kids Left Behind series... i literally bawled when the series ended. Then more recently i read through all the books that Phillippa Gregory wrote on the wives of Henry VIII (though technically not a series) and i seemed to have a empty and unsettled feeling when i came to the last book, not because of the way the series ended, but that they ended at all and that i was left with no more fluid reading material. :S And now... i find mysefl almost frantic for December to come for the Twilight Movie to come out because i just finished the last Twilight book... and i am searching all over Google for pictures from the movie! i have a sickness. i am an adict!!! I am hooked fast, and seem to live and breath the book i am reading, and then when the supply to my addiction is suddenly cut off i am always left unsatisfied, no matter what the ending! Then i go through almost panicy withdrawls! and i scramble for my next "hit" or series! lol

i wish there was a support group for this. :P