The singleplayer was decent, but that's about all I cared for in Modern Warfare 2. I played COD4's online for about a month straight until it just got rather boring for me which makes my interest for Modern Warfare 2's online drop through the floor. If I ever restart Gamefly I might rent it again to spend a little more time with the multiplayer, but it seems like the multiplayer has way too many issues anyway.
With my already uninterested feelings for the game (and probably the series now too) coupled with my stance on what they did to the PC version, I just don't give a crap about the games anymore. I'll rent them for the singleplayer and that'll pretty much be that.