I've had sound turned off for probably 2-3 years now. Anything that I might need to hear I have represented visually somewhere on my screen (shot rotations, screen flashes, cooldowns, etc) and so I never really felt like I needed WoW's sound. If anyone has an Engineer mount, they understand. I don't PvP much, so it doesn't really matter about rogues. I'd rather listen to my own music/background noise.

And I spent a lot of time in Molten Core trying to tame a REAL Core Hound, but annoying problems with pathing and my crappy UI (thanks to the patch) made it more difficult than it was worth.