I've always maintained that the attraction to violence is an attraction to action. The way characters in some games explode is a form of feedback. If they turned into rainbow colors it might be as satisfying. In general, I agree with the social impulse to alter the direction of popular culture away from violence. The other factor is that I wanted to develop a game that was something more than a shooting gallery.
Risky business considering some of the more popular titles have very violent content.
Historically, the trend of media toward explicitness in both sex and violence has not benefited the media in ways people imagine. You can't sell a sexually explicit movie right now. Violence is more difficult because it's action, but I think you'll soon see action without violence. A lot of people may get all their knowledge concerning science from novels like yours. What I do is like a first-stage booster rocket.