I like watching shounen anime every now and then.
You can watch them for hours and there's still a lot left. Sometimes they feel like you yourself grow because of all the training etc.
As long as the themes are strong, I like finding out about character's powers. What I don't like is a random collection of powers just because there are many characters.
Shounen tends to have fairly differently designed characters, it's less prone to same faces & bodies (except for women oftentimes...).
Sometimes the crankiest designs are the ones I like most.
What puts me off is most though is the typical pacing in long arcs.
Too damn slow imho. Especially the narration choice of Hunter x Hunter (2011 version) starting form episode 210. I was so glad when it was over. Most of the time it was just stating the obvious, slowing down the plot unnecessarily... I would have liked that arc a bit more without that. But even then I'm quite conflicted about the Chimera arc in general tbh.
Yeah, Fairy Tale is a weird case for me. I like some characters a lot (Erza and Juvia! <3) but the plot just never seems to reach its full potential.