All games, books, films etc, have to have some type of conflict, or there would be no entertaining story.
The problem is the degree of conflict, as makers forever push the boundaries, we accept an increasing level of violence as normal, which could influence our everyday behaviour.
For example, years ago when the TV program The Sweeny was shown, people were shocked by the language, violence and s*x.
But watching a repeat of it recently, it seemed very tame. Well the program hasn't changed, my standards must have dropped, caused by years of watching TV programs that have slowly got more violent and s*xy.
Granted it doesn't make me want to go out shooting people, but things that would have shocked me thirty years ago, don't bother me now. Although I still dislike the bad language as much now, as I did then.