It's not that no one had an Atari, it's that people didn't like it as much as a Nintendo. Not that I blame them....the Atari had some fun games, but they lacked complexity. Really, the Atari shouldn't belong in this poll, and neither should the playstation. There's kind of an eclectic mix of consoles here, and (since the playstation is in the mix) several should have been included, such as the original Sega console, Turbograffix 16, the Neo/Geo, Panasonic 3DO, etc.
Games like Halo are just a waste of time in my opinion and can't hold a candle to the original class of first person shooters like Contra.