I started hating CoD after the first Black Ops. Mostly the community. It's horrendous, but fun game with friends nevertheless. But after Black Ops, it just turned into rehashed shit, taking out elements of the game that I liked. Still play Blacks Ops Zombies with friends nowadays.
However, it's latest iteration seems really fun. Played it the other day at a friend's house. The Multiplayer is pretty fun with all the added tweaks and classes.