I could be wrong, but I believe the original purposes of computers were to wage war. They first electronic computers were designed for calculating artillery ballistics and cracking enemy codes. Education, media, arts, games, medical sciences all had nothing to do with it.
Actually, while war is horrible, some of the technology developed for fighting conflicts has greatly advanced our quality of life in other areas, and computers are just one example. In fact, I suspect it would be hard to get through your day without using some technology that was originally designed for a military purpose. Though, it might be an interesting challenge to give it a try.
