[Douchetallica]

Well, Jack does bring up a valid point on the army using game simulators to train soldiers. Game simulators are used too for some airplane instruction courses as well as driver ed schools. I guess sports games can be used as training simulators too.

Neither of those systems train you how to fly, drive, or play basketball, they just train you in how to be in that state of mind and have the mentality of knowing how to react/execute.

I remember taking my drivers ed course and we used a simulator for a while, it wasn't to teach us how to drive, but how to feel comfortable when other cars are around us and prepare us on how to react and think about what to do.

The whole killing without remorse is part due to emotional state (mental illness, frustration, being picked on, family/relationship problems, etc...).