I don't hate JRPGs. I in fact, quite LOVE some. Chrono Trigger, Final Fantasy 6 and 7, just to name a few on a long list of greats. I do however hate many of the modern era JRPGs. They're so full of tropes, and bad design choices that really bother the crap out of me.
Take Level 5's "White Knight Chronicals." I had been waiting for that game since the ps3 came out. I was stoked. It was a jrpg that wasn't from Square-Enix, so I was hopeful that it wasn't going to be the same Final Fantasy we've been spoon fed since FF10. Right from the get-go after plugging the game in, I knew I was going to be disappointed. You make a character-- a silent protagonist. But then, you take control of the "main character" that's a talker. The game is all about that character (the talker), and his connection with the White Knight (magic mecha, really). Early in the game, the "main character" and your created character (not the main) have many one sided conversations, where the main character yammers on, and the replies are assumed and contextual, but totally out of your control.
It was a new direction, but a good designer would have seen how disconnected the player would feel in even early development. They didn't see that, and went forward with everything. This was a fresh jrpg for japan. It was "fresh," and still reeked of their tropes and tired play styles.