LOL
Ummm, how many people watch hours of TV every night. Like most of the freaking US. It doesn't matter if the programs are good or bad, they watch it.
If your playing is messing with your real world life then you've got a problem. If you CONSISTENTLY stay up too late, go to work so groggy your work suffers and your job is in jeapardy then you have a problem. If you play so much your family life suffers you have a problem. If you play so much your wife leaves you or you loose your job you REALLY have a problem. But if it's just a hobby you play as much as other people watch TV; if you hold down your job just fine; if it isn't messing up your family life; then I don't think you've got a problem. You've got a hobby.
Incidentally, the same could be said about people who stayed glued to the TV too much.
My opinion is that, in moderation, computer gaming is FAR healthier then TV. It's interactive -- you've got to actually think things through, make decisions, and DO stuff. As opposed to TV where you just sit there. If you're playing an MMORPG you've most likely developed relationships with a lot more people that someone who spends the same amount of time staring at the boob tube.
I still hear from my old EQ guild from time to time. None of us are playing EQ anymore but we became friends. If I'd spent that time as a mind zombie in front of the idiot box I'd have never met them. I've got some friends in Washington who I make a point of looking up whenever I'm in town. We've all heard of people who met over an MMORPG and got married.
Like anything else, computer gaming can be harmful if carried to extremes. If played in moderation it's just fine and far better then other, more popular pastimes such as the boob tube.