Myself. If I wasn't here, all of you would be having a lot more fun.
The fact that the Phoenix Wright/Professor Layton crossover is going to be a Japan-exclusive.
That every single game maker wants to remake Gears of War, and that crowds out all the unique and interesting stuff like Phoenix Wright and Professor Layton, neither of which I've ever played but the sentiment is still there.
Myself. I'm such a buzzkill everywhere, even Buzz Killington would have his buzz for buzzkilling killed around me.
Trolling. Sure, it's funny after the fact, but trolls basically just make people miserable. And that goes for actual bullying as well.
<--victim of bullying
Did I mention myself? Oh, really? Well, I bear mentioning again. So yeah, myself.