It's my favorite 5th gen Pokemon hands down, followed by Ferrothorn, who I liked before it became cool. Even if it dropped from OU as of X and Y, I still love using it. It's a freaking seraph-atlas moth hybird for Pete's sake! Treated like a legendary at one point, no less! The fact that it's associated with grace and dacing (as it's signature move Firey Dance, and might-as-well be Quiver Dance) makes it even cooler. It makes me wish it got more exposure. I wish it was in a Poke Ball or even just a trophy in Smash, but it seems they forgot poor Volcarona... I even have an abominable inner desire to see Volcarona playable despite it being impossible and senseless. DON'T QUESTION ME!
TL;DR: I love Volcarona, it's one of my most favorite Pokemon.