Fuck that, don't tell me how to fucking play your game. If I want to sit down and avoid all the homophobic, idiotic, childish trolls and hackers by playing alone, I should be allowed (In that note, keep a better eye on your multiplayer or stop whining).
You don't want us to play alone? Pull a SOCOM or a MAG and make your game strictly Online Multiplayer. Simple as that.
And yes, I know they've worked hard on it and people would be missing out on stuff...and still. People are entitled to play the game any way they want to. if I want to buy the game and use it as a frisbee, that's fine. You got my money already, the game is mine and that's that (It's another issue with hackers, I know. Don't even go there).
I like playing CoD by myself. I'm not very good at it but I enjoy it. Every now and then, if I feel like getting my butt kicked, I go play online. But then I run into the issues listed above and I leave. I like CoD but don't try and force me in a way I wouldn't enjoy it.
(Edit: Yeah, I might be overreacting. But if the multiplayer was better, I would probably agree with him. I love playing Gotham City Impostors and that's online only. yet, it's so balanced and fun that I don't give a crap. That's my issue.)