I have no problem with yaoi/yuri in theory. But the problem is, being straight, I tend towards fics with het pairings. Crack at the most. And having to sort through all the yaoi parings that Naruto seems to provide gives me a headache.
The Mary Sue is the perfect character. The smartest one, the one who is always right, who turns the dark into light, strongest of the strong, befriender of the lonely, the one who knows anything and everything. In other words, the most annoying know-it-all ever to exist in fanfiction.