I'm a freak because the first time I played multiplayer COD was MW3 last year. COD is still a single player series for me. The only battlefield games I ever put any time into were the bad company games.
Are you actually buying $60 COD games just to play the singleplayer campaign?
I don't do COD multiplayer at all, but I still rent the new games from Redbox just to try out the campaign. So I can see your perspective, but at the same time I only pay $4-6 for a short rental of every COD game. I'm not coughing up big bucks to experience a one-time-only campaign.