Hate is a strong word. That said, -
...I strongly dislike the fact that there isn't an OBC of Mamma Mia, and we have to deal with that horrid recording.
...I strongly dislike (like many others) evil stunt casting.
...I strongly dislike not having Hugh Jackman on Broadway anymore.
....I strongly dislike the fact that every girl in the world is now using "Defying Gravity" for auditions. I was so hoping it WOULDN'T become the new "On My Own."
...I think its unfortunate that a lot of people haven't been exposed to classic musicals. It's the same as literature. Yes, there are a lot of great recent books, but sometimes to appreciate where these great writers have gotten to, you have to go back and see where they came from. I adore Rent, Wicked, Les Miserables, and the past 25 years-ish of musicals and theatre as much as anyone else, but for me NOTHING beats the classics. And despite whatever anyone says, it all comes back to Rodgers and Hammerstein and their innovation.
Ok, I'll get off my soap box now...
(I also strongly dislike the soap box reference. Unfortunately, sometimes I don't know what else to use.)
There's always room for pathos - and jazz hands.