I tend to tease the older vets that I have an easier time learning to do ultrasound, endoscopy, and other such technical skills because of all the quarters I pumped into video games as a kid. I like to tell my mom I’m earning those quarters back now, with interest!
Of course, it isn’t necessary for a game to be violent in order to take advantage of the fact that fast-paced games can improve cordination and so on. Whether or not first-person shooter games and the like have any negative effects, it doesn’t seem like it is the storyline or content per se that is improving these skills, just the manipulation of controls, evaluation of rapid on-screen cues, and so on. It seems like it ought to be possible to make games that can accomplish this without content that some people object to on principle.