Not having suffered, to my knowledge, any other form of depression, I can only judge based on my own experience that Post Potter Depression must be the most virulent form known to man. I have read all the Harry Potter books, seen all the movies, listened to the books on tape and am finally left with nearly nothing. Mere snippets of Harry insights trickle from the crumbs J K Rowling chooses to drop since the last book was published, snippets which were better left unsnipped. I find myself going to the website only to find that the sealed door is still open, containing only the last message posted upon publication of the final tome.
My friends tell me, you can always read another book. I try, but my heart remains unmoved, my mind in limbo waiting, hoping that at least the latest movie will soon come to dvd and perhaps there will be an announcement about the next movie.
I have spent the better part of so many years reading, re-reading the Harry books available, immersed in Hogwarts. Alas, the magic is gone.
Maybe I'll start all over again....no, not for awhile. For now, I'll drown my misery by immersing myself in the dark side...you know, Hershey's, Godiva and Whitmans.