Why The Fictional Embellishments?
Famous people become famous because they have lived lives that are extraordinary in some way; ergo, biopics are made about famous people because their extraordinary lives make for interesting drama. Why, then, all those fictional embellishments--aka LIES--that are added to movies and TV shows about real people? First, they make movies about those people because they had interesting lives--then they decide that their lives are not interesting enough and therefore need to be fictionalised??? If their lives are so uninteresting that they need fictional padding, then why bother making movies at all about such obviously uninteresting and unremarkable people???!!! When Brian De Palma cast Kevin Costner as Eliot Ness, he did so because Costner actually resembles Ness--much more than Robert Stack did. And then De Palma and David Mamet fictionalised Ness' life completely, to the point that they even showed Ness--who never killed a man in his entire lawman career--throwing Frank Nitti off a roof! I'm surprised that the Ness family did not sue De Palma and Mamet for maliciously slandering their illustrious and most honorable ancestor!
God is subtle, but He is not malicious. (Albert Einstein)