I could give a multitude of reason to why I'm not playing this game (for example, blindfire, lag, all that), but I know that's BS.
The main reason I don't play UC3 much anymore is because it's not summer/semestral break/vacation.
After over a year blindfire is still OP, the lag continues to add insult to injury, the technical issues like being dropped from matches randomly often make me just not want to bother, and being reset killing off a lot of my morale for the game. On top of that many of my friends have stopped playing due to similar issues, further lessening the amount I would play.
I just don't enjoy playing the game anymore.
I appreciate that ND have made some efforts in responding to community requests / complaints, but they have always seemed pretty much resigned to the notion that the most serious technical flaws can't be fixed with the resources available, and I think their fostering of the lowest common denominator playing styles (all the cheap bs that ND provides, that new players never need to adapt away from as they are so effective) will end up hurting them more than benefitting them in the long run.