I stayed up all night when the last HP book came out because I was so upset with Harry and Ginny getting together and having so many lame named children
I think the book would have been so good without the epilogue!
One show I was really sad about it ending was the cartoon Braceface. It wasn't very popular, but I loved it! They gave no warning about it ending at all, I just couldn't find it anymore. Same thing with Pepperann.
I wish you find a new obsession, preferably one that doesn't have the possibility of getting discontinued.