If J.K Rowling wanted to end Harry Potter, she did it with his last book. The movie was dark and angst, with a lot of sad moments with Hermione leaving her home.
As Harry and Voldemort are in a race to find the Horcruxes and either use them or destroy them.
The movie was amazing as it is tying everything together. Harry goes back to his birthplace, where his parents were murdered. Was so moving.