me too...
depends on how old my kids were, if they were teens I might consider it, but I would reject it out of hand for anyone younger than about 15 or so....
there really is NOTHING in those games that these kids won't or wouldn't have seen in any movies, TV or school.
I watched violent movies all through my childhood in the 80s and 90s and I turned out just fine. But my parents illustrated the difference early and often too....
Once a kid is in their mid teens, there really isn't much you can do to stop them from playing GTA, downloading porn, listening to gangsta rap, ect. Even the "good kids" do this. If they were raised right, such influences won't lead them astray.