"Reality is no excuse for bad storytelling." - some film school professor
This was a quote that I learned when I started studying 3D animation in college. I'm not sure who said it originally; but I heard it from Eric Hansen, who did a lot of special effects work on films like The Fifth Element, The Day After Tomorrow, Stealth, etc. The basic message is simple, telling a good story is more important than getting all the facts right. Also, just because people might conceivably do something in real life doesn't mean that it makes sense for them to do that same action in a story.
Something to keep in mind the next time you watch a movie that is "based on a true story" or "inspired by a true story."