Because the game make you feel like you are in the place of the characters,this game is pure depression,the most heartbreaking moment for me was the dreams of Chloe where she could talk to her dad especially that one that she was on that mini theater where she played with Rachel,and he told her that everything will last a moment and the rest are the scenic of this movie (he mean life if i get it right) and then comes the end,and after that it showed again that truck hitting again her dad that totally made me feel like shit cause i lost my dad some years back not by a car crash,but i can totally feel her. I got that screenshot of the moment I describe: https://imgur.com/jrnDETv \ Also the second heartbreaking moment for me was when she saw the crashed car on the junkyard I felt like shit too...

(Sorry for bad English)