I actually love raiding, and I loved WoW. I was a guild leader and my guild raided throughout the WotLK expansion. It was frustrating as hell, but we became RL friends over time, and it was also a great gaming experience. Being really frustrated and then eventually succeeding is what gaming is all about for me.
I quit WoW, then 2 years later got GW2, because I was basically raiding too much and it was messing up real life, but I found that GW2 was "safe" because it didn't have raids. The addition of raids to GW2 would be great, but I'd probably have to quit before getting addicted. We need at least 1 "safe" MMO out there, and it still needs to be fun. GW2 is that game!
I suppose anyone can say "well really that's your problem" and I suppose you'd be right. I agree with Vayne that the game culture can be the developer's fault, but I would not extend that and say that addiction is the developer's fault.