By that logic, we shouldn't have any games set in current, real-time conflicts, which we do. By the way, there are a ton of combat veterans that play those games, and even contribute to the development for realism. (See Squad!)
While we're at it, we should probably censor all of the movies, books, plays, music, art and everything else that deals with war, violence, death, and countless other situations and conditions that legitimately affect people.
Better still, I think it best to let those that wish to partake do so, and those that do not, don't.