Here's the thing - because I played the Medal of Honor beta, and after I just got into a multiplayer game and I realized I was a talliban shooting at coalition forces, I got a really sick feeling in my stomach and immediately stopped playing.
After just coming back from a deployment to Afghanistan (and one deployment to Iraq in 08), I lost a friend in afg and had several friends blown up by IEDs... I know it's just a game, and I know you might see it as 'bullshit protect the children' but really, I'm a gamer and I understand where you're coming from, but when you do a deployment for 7 months in the middle of nowhere surrounded by people who really don't like you, it's stressful, and the idea of playing a game as talliban shooting at US armed forces made me pretty sick.
I'm sure plenty of other Marines won't have a problem with this game - all my friends are huge gamers playing COD and whatnot, but I do think a few others would have problems with this.