If someone handed a copy to me. Mindless shooting is mildly fun, worth an install, definitely will keep me entertained for the duration of the singleplayer.
Oh, but to buy it?
Like many people here, I don't like its multiplayer. At all, in fact. The skill ceiling will always be limited to who shoots who first, dedicated servers still aren't a thing, PC ports blow, teamplay is not encouraged, death is meaningless. I've heard Advanced Warfare made some very good attempts at fixing those problems (the movement in that game looks fun), but even with a fixed multiplayer I still would spend most time in singleplayer. And as everyone will repeat, a rather mindless campaign that typically lasts six hours is not worth the price.
Zombies is fun, campaign has an appeal to play through every once in a while, but if I want the 2edgy4me modern war shooting I'd load up Battlefield 4.