I'm kind of tired of seeing people who ask about the previous games get told they're crap because they're old or they don't offer multiplayer due to the age-old servers being taken down. For anyone who's actually a fan of Halo's story or the arc of any of the characters, you owe it to yourself to play the originals and see what they're about. Sorry you missed the boat for Halo 2's multiplayer and sorry you can't understand Halo 3's story due to only growing up with an xbox 360, but they're all compatible and the single player is still a solid story...even if it mostly involves kicking alien a...ss. Anyone who's got a gripe on the story of halo, was obviously never that big a fan to begin with. While I'm sure it's not a movie's quality story, this is the best at immersing you into the games and giving you the best narrative of 'almost' any video game.
Stop looking at the art In a game, and start looking at the game As art.