Something that annoys me when it comes to animating.
As I get more and more involved into animation and learning how to animate something I found that annoys me somewhat is when an animation feels stiff for some reason and I don't know why!
Usually when I look it up there are a lot of reason why it can feel this way. One reason is that and the bones move at the same time which feels robotic, another reason is lack of arc, no keep alive animation at all (Which is a whole other can of worms), no secondary motion, or squash and stretch, etc.
I wouldn't say I hate it no it allows for problem solving and challenge me, but wow I got to admit it does feel annoying when it feels like I'm beating my head against a wall.