I'm fairly certain it is impossible to offend me with video game content. Can something be seriously fucked up and contrary to my morals? Absolutely. Will that shock me to a point where I won't play a game? Absolutely not.
These are video games and none of what is in the games is there for your 'approval.' It is part of a story, a narrative vehicle, and as such is not really something that I feel I can be offended by. You know what offends me? Dead Space 2's commercials saying, "your mom will hate this game! Buy it!" That offends my sensibilities as a person, a consumer, and a gamer. THAT will make me not play the game.
People get offended far too easily and play the, "X is a sacred thing and can not be defiled!" card too often. If you don't like or are offended by a game/movie/show/song/sketch/article, then you should turn it off or remove yourself from the situation. It is not up to YOU (general "you") to determine what is sacred for ME. If you are offended by dead babies, I 100% understand that and respect your opinion and decision. However, that doesn't mean it shouldn't exist - I'm not offended by it and I have as much a right as you do to have access to content that we may not see eye-to-eye on.