Mostly because its the generic corporation of games. Its like McDonalds. sometimes you like to have a BigMac, but you dont want anyone to know about it. In the end its like an unsatisfying rock in your stomach
Personally the game is fine for me. My first and only CoD was BO so I am not suffering from burnout. Most common complaint I tend to hear is that they haven't changed much since MW2. I might pick up BO2 at some point. I enjoyed BO well enough. The MP was dumb fun.
Don't hate it, IMO, I just didn't take a shine to the newer titles past the first two Call of Duty games in the WWII setting. That and it sucks getting yelled at by five year olds online, I prefer my online shooting 1999-style with texts, much quieter that way.
I only hate how people think its the greatest war game ever i mean of most even seen metal gear ground zeros but again thats opinionated. The campaign is the only real reason i get call of duty as far as multiplayer goes anyone can be either camping hard in a map or using hacks. dealt with it loads of times in MW2. when you think about it Medal of honor started first and medal honor war fighter is amazing. between that and black ops two i'd rather try warfighter since i have every call of duty except black ops 2