Identity Crisis?

There's a thin line between fact and fiction. Fiction tends to be a morphed version or an alternate interpretation of reality. In this day and age where we find ourselves having easy access to books, movies and TV shows, is our individualism endangered by the overwhelming number of fictional personalities we encounter on a daily basis? As much as we would hate to concede our identities to someone else's figment of imagination, the fact remains fictional characters have taken root in us subconsciously. And the observable result is far deeper than imitation.
The truth is that we rarely find ourselves at a loss for words. We have a database of popular comebacks for any situation ready at our disposal. Dialogues recited before a camera echo in a ripple as its eventually spoken by a thousand tongues that adopt these scripts as words of their own. But the comparison doesn't end with just words, personality traits and habits can also be attributed to fictional influence.  Even our very morality is constantly subjected to fictional influence. Why? Ask yourself this.  Aren't the dogmas of morals and ethics are just a collection of popular opinion? If so how does popular opinion come about? Art is our one sole unifying medium with the capability of re-enforcing ideas of morals through stories that force us to calibrate our morality scale.
Personally I don't fear a zombie apocalypse I fear a fiction apocalypse. Perhaps it has already begun, maybe we're already walking around as amalgamations of a multiple fictional characters. How can we ever know who we really are?

[I was inspired to do this piece after reading a very brilliant and thought provoking quote from the book 'Gone Girl' by Gillian Flynn. It's rather long and all I could find online are these few lines from it. On the subject of the book, it's a great read. I recently watched the movie. Somehow seeing the very same book come to life in the motion picture was eerily chilling.]