Not for everyone...
Graphics:
Well, since the game came out in 04', don't expect it to have amazing visuals. The graphics are unique in a way, but in no way are the revolutionary. Some games don't need stunning visuals to pull it off like Starcraft, and WoW falls under the same category.
Sound: The sounds are alright. I mean, I really don't know what a good sword sound, or fireball sound, sounds like so....They all sound believable nothing seems out of place which is nice.
Gameplay:
Lets see. If you're into the whole MMO experience like I said before, then this game is definitely for you, it has everything you need and a little more. One of funnest things I had doing back when I played was doing instances with a bunch of friends. We'd all go over to their basements, bring PC's, and just play for hours on end, doing raids, quest, PvPing, etc, etc. But now, its mostly CS:S for us. There's a TON of things to do in WoW, I'm not even going to get into them. I can see why people love this game, but it's just not for me. Overall: Great game if you love MMO's, if you don't well then, whatever.