How does it feel for you? For me its usually sad, thats how i know how good a book was, the more days i miss it the better it was for me. I hate and love that it ended, i enjoy the ending but sad that now i wont read anymore of those people. Its like a feeling of having a close friend that you like but know you wont hear from them ever again, and days after you still miss reading about them or finding out what else happened to them. But think the effect is better if it was a series as then you got more time to spend with them and they grow on you, with a single stand alone book i dont find it that much.