You don't have to play a game to know if you like it or not. I've never played World of Warcraft, but I can tell by looking at it that it's not my type of game. He never judged it. He simply said he has no interest in it. Also, you could play the majority of the futuristic FPS games and get a feel for Halo. He never said "Halo sucks!" He said he has no interest in it. Also, what makes you think that he's never played the game? I'm a PlayStation player now too and I've probably played more Halo than you have.