I play WoW. Have for about 8 months now. I play a few hours a day. Sometimes, it is all I do in a day, sometimes I don't touch it for weeks on end. It is hardly the most addicting thing I have encountered. I have never had a rollicking social life, so that doesn't bother me, but I do go out with my friends when we feel like it. Being unemployed gives me a lot of free time to play WoW at the moment, but that will soon be taken up by TAFE homework.
I enjoy it. It's entertaining, and while the seemingly endless grind does get annoying, thats where you either stop your questing and go do a battleground and take out your frustrations on the opposing faction, or you just turn the damn thing off.
Personally, I use WoW as a temporary escape from the crap I have to put up with in my life, and killing the rabbits and deer and sheep and other critters, while it gives no rewards, it makes me feel vaguely superior. Completely illogical. Same logic applies to the grinding and killing for quests. Bashing some creatures head in can be very therapeutic when all I want to do is throttle the next person to ask 'are you alright' or 'whats the matter?'.
I'm neither defending or bashing WoW. It has its good points and its bad points. If you enjoy the game, forget what other people think and just enjoy it for what it is. If you hate the game, leave those who do enjoy it alone. They aren't hurting you by playing it, chances are you don't even know them. This doesn't have to be like world war 3. You don't have to fight with each other ALL the time. It doesn't solve anything. If you don't like it don't play it. If you do like it, then get back in your cage and level your damn warlock.
NOTE: Just don't play it too much. While I agree that sunlight is evil, it's supposed to be good for you, so go outside and ride your bike, or play with kittens or play golf with cane toads or fling snails into your neighbours yard. Trust me, half an hour of sunlight probably won't kill you...Although I do recommend a pair of industrial strength sunglasses because all that time spent in front of the computer will have made you rather photosensitive.