I keep trying to go back to Modern Warfare 2, as it showed a lot of promise at launch and the sniping isn't half-bad. But every time I seem ready to get into it, a hacker, noob-tuber, or quick-scoper shows up and generally ruins the game for everyone in the server.
The worst part with Black Ops is that Treyarch over-reacted when they made the game. They tuned down the stats of the snipers, the assault rifles, the shotguns, and the SMG's so that they wouldn't be too powerful. But, in doing so, they made the game so much less appealing, and that's one of the reasons I just can't play Black Ops anymore.