*sigh*
I'm part of the CoD-hating crowd. However, I don't really hate CoD. I just... eaarrg. I suppose the best term would be "ambivalent".
On the one hand I think the online multiplayer is actually good. Not my thing, but I can acknowledge good design when I see it. On the other hand, the single player is... not so great. Yeah, MW1 was pretty good. But MW2 was like something made by Michael Bay and Black Ops' campaign was an unmitigated turd.
The main source of my ambivalence is the effect it has on the industry as a whole. Because a vapid, militaristic, meaningless and pseudo-realistic shooter sells like diamond-encrusted hot cakes, developers promptly start pumping out a parade of vapid, militaristic, meaningless and pseudo-realistic shooters. (Why, hello there Homefront, howzit going?) As someone who is not particularly fond of vapid, militaristic etc etc shooters, this makes me a bit grumpy.
I realise that this isn't really CoD's fault, strictly speaking. But it does not make me well disposed toward the series.