There's just so many options nowadays. I have absolutely no need for the 32GB version, but I have one anyways. I've also got a 32GB SD card and as a previous Nexus 4 owner, I've got 50GB cloud storage from Box.
So if you're someone who has the 16 or 32GB version, the internal storage can be used for apps and games and everything else can be used for media. I'll load up my SD card with movies/music, use Box for pictures, and the rest of my internal storage will probably be free.
So you just need to find out if your apps take up 9GB or not to decide. Or if you're in the market of buying one and don't mind the extra $50, get the 32GB regardless. It reinforces AT&T's decision to release the 32GB version and it will be worth more later on when you trade it in or sell it.