I used to be a big fan of the CoD series, ever since I got the first one as a gift. Played each one up until MW3, at which point I kinda just stopped caring anymore. I bough Blops2 on sale after hearing it was really good(all the other games I bought at launch or close to it) but I refuse to buy Ghosts because of how terrible it looks. I just picked up AW on sale but haven't touched it yet.
I've tried multiplayer(mostly United Offensive, which I believe was the one where you could drive tanks in MP) a few times but the Single Player is what draws me and CoD, for most games, has really good single player campaigns, or at least a fun 6 hour roller coaster ride. Even when the campaigns are ridiculous, like BLOPs and, to a lesser extent, MW2.(MW2 was bombastic but held together well enough. BLOPS was like a Michael Bay Movie mixed with a James Bond movie with a few gimmicks thrown in, like SR-71 mission)
MW3 is bizarre because I love half of the missions(the two in Paris, the one in Somali and Dust to Dust were awesome) while the other half are nonsensical(the one on the airplane in particular) or average(The New York Missions), and the overall plot holding them together feels really patchy and fails to address a lot of plot points from MW2(You know, like the whole killing Gen. Shepherd thing, which just kind of gets forgiven at the end, despite the fact they never proved he was a traitor or anything like that).
I was curiously optimistic about BLOPS3, but I also hate rewarding Activation for cutting out the single player and offering what isn't even a standard steam per-order discount as compensation. I don't like the series that much and I'm more then willing to just not buy the damn things anymore in protest.