Playstation controllers.
I can't see how people think they're the pinnacle of controller evolution. The shoulder buttons suck, the sticks are floaty and uncomfortably placed, and it fits so uncomfortably in my hands that they cramp up after 15-20 minutes or so.
I'm actually on the opposite end of the spectrum here. I can't stand the Xbox/XBone controller design, because the sticks are so awkwardly placed and the triggers feel weird. The PlayStation 3 controller's triggers were poorly designed, I will give you that. They are far better on the PSX, PS2 and PS4 though.
Other than this I can't think of anything in gaming that most people love but I hate.
Oh yeah, I can't stand the the entire XBox brand as a whole and almost everything and anything associated with it. I wouldn't go as far a calling it 'hate', but the whole thing pisses me off to no end. The pinnacle of this might have been the 'Halo + Mountain Dew + Doritos' thing.
Come at me.