It is not the PCs, it is not the consoles, it isn't WoW, it is yourself. It is an addiction and no matter what it is up to you to fix it.
I used to play MMOs a long time ago when they first came out and was sucked in like the rest of you. I played for a few years, had some high level characters, but after a while it got boring, and it did not reward you at all for being skillfull. It just rewarded you for spending 20+ hours a week playing online.
I quit all MMOs and haven't touched one in many years, probably near 10 years since I quit playing them around 2001ish.
I still have a PC and I have my 360 and I play them both. I have played a lot of L4d2 lately. I mean a lot. However, I will take 4 or 5 days off from playing games in a row. Read book, go out for a beer with friends, go out for a bite to eat, catch a movie, and so forth.
If it bothers you that much you have the power to change it and you can still enjoy playing video games. You just need to learn to use moderation, just like every other addiction out there. Smoking cigarettes is horrible for you, but if you were to smoke say 10 cigs per a month it would not really hurt your health that much at all, especially compared to someone who is at a pack a day.
I am not suggesting you smoke or anything, I am just simply saying most things in moderation are OK to do.