Here here, Teepo. Though I really wouldn't mind a waifu who has a room like this. (couldn't find it anywhere for the life of me on google or bing, so I had to google Neogaf Persona 4 fan room. Had to enter the Shower Goblin's domain. Makes me want to )
(Image removed from quote.)
It's just a hobby. As long as it's not taking over your life, I don't see what the problem is. That said, I wouldn't want that to be my bedroom or living room.
Also my thought on her is that this probably IS taking over her life- she even appears to be wearing similar clothes and cut her hair to be just like one of the characters in the game.
edit: seeing some related pictures (from tweets or other web pages) it seems like it likely came from a Vice short doc about Japanese otaku. Interesting. Might have to check that out.
Found it- no shower goblins needed.
Didn't see that room, though, or did I miss it?