A real flight simulator is more than just some high-tech airplane video game. It is a learning tool.
Aside from being a training aid to teach you to learn how to fly airplanes, it also serves as an educational tool in the sense that it can help you to learn from the mistakes of other pilots.
Whenever you hear about plane crashes in the media, there is always some sort of discernible, preventable cause.
Pilot error might be at fault. Mechanical error could play a role in the accident. Or even hazardous weather conditions could have made the conditions difficult for a pilot to handle the plane properly in a particular situation.
Whatever the case may be, every aviation accident could have been prevented.
So how can we learn from other pilots' mistakes, to ensure that we do not repeat their mistakes again?
One way is to study each accident in the National Transportation Safety Board (NTSB) accident database.
The other way is to use a real flight simulator to try to replay or recreate the conditions of the doomed flight, learn from the mistakes that were made, and then identify how you might be able to prevent the same accident from occurring if you were to ever find yourself in that same set of circumstances that caused the accident in the first place.
With a real flight simulator, you can replicate the weather conditions and you can attempt to maneuver the plane at the same altitude, airspeed, and attitude as the original plane did, and see if you end up with the same result (crashing). If you do, then you know that you have learned from the previous pilot's mistake.