I remember two years ago or so I tried out the WoW trial, and I still don't understand how people get addicted to it.
Maybe because I had lag :|
I played legally during the Beta and on my brothers' accounts for a bit.
The thing about it is that there's so much to do, and people do all of it. Which is just crazy, but whatever; to each their own.
My problem with it is the grind. It's been said about a quadrillion times before so I don't think I need to say any more than that.
Can't say I feel guilty about playing on a private server since I play really only a couple times a year. I could count on a single hand the amount of times WoW.exe has been launched this year.