My Childhood Ending

I sit here watching Harry Potter and the Deathly Hallows part 1 and I feel a wave of emotion come through me. Part of my childhood is ending soon. Harry Potter will be ending this Friday.
I’m a little nervous for this last one. Even though I KNOW it is going to be spectacular and an amazing finish, but what is going to come of literature. Are people going to try and top the series? Are they going to try and do spin off books (I pray not-that epilogue made me sad, I felt like it was unneeded).
I hope there are book like Harry Potter in the future for my future children to read, if not, I guess they will just have to settle for this series, A Wrinkle in Time series (I have never read them but I want to), Chronicles of Narnia, and Charlie and the Chocolate Factory.