I'm very happy and pleasantly surprised that you found this movie as emotionally affecting as you did.
Nowadays, thanks to YouTube and social media, we're used to a time where people are constantly filming themselves doing everything, but that concept wasn't nearly as common back when this movie was made as it is now, so I wasn't sure how much/if the concept would be as profound or significant to you now as it was at the time the movie came out.
This movie is one of the movies that really showcases just how much of a great dramatic actor Michael Keaton really is, even though he's not really viewed that way by most people now because his role as Batman, as well as many other antagonist roles he has played kind of overshadowed his more subtle and dramatic abilities.
This movie, to me, will always be one of my favorite performances that he's ever given.