The ending cuts me up almost as much as the transport scene
Louis Creed lost his son, and he was brought back to life but at the end of the movie he had the potential to say goodbye to his son, to tell him that he loved him and misses him. Instead we see Gage looking sad, walking away from his father and pouting, "No fair".
To me that was almost as heartbreaking as his initial death. One could argue that when he came back to life, he really wasn't the same person and was evil but none the less it did tug at the heartstrings just a bit.
https://www.youtube.com/watch?v=G__cEmPmm_k