My boss pretty much spends his entire non working life playing eve online, absolutely hooked, its even a common talking piece between few of them during work as well, Trying to keep interested whilst hes talking about ore mining and spaceships is probably the hardest aspect of my job LOL.
A few people in the clan I play in have been lost to wow including one of our longtime players who after being threatened with a divorce due to much cod4(what we were competing in at the time) Bought his wife a pc and wow and they now work go home and play that all night every night, his best friend even feels abandoned heres what he said when I last asked about where he was and bear in mind theyve been friends for 15 years and he lives about 20 mins drive away from him.
[Z+]Ogr3: He has the WOW needle embedded in his forehead, spine and testicles
Violator X: last thing he said was his wife was beginning to get pissed off with him on the comp all the time and then wham gone
[Z+]Ogr3: He used to stay in touch with me regularly, now I never hear from him
Violator X: your shitting me?
[Z+]Ogr3: Yeah, they got into an arguement over the computer, the end result was that she got a computer and now they play WOW together!
Violator X: ........
[Z+]Ogr3: More than friends
[Z+]Ogr3: Hes my brother in heart
[Z+]Ogr3: Maybe not blood, but in all other respects
Violator X: but now you dont see him because of wow?
[Z+]Ogr3: Yup
[Z+]Ogr3: You know how committed to VC, COD, ect. Well, now its WOW and he's never coming back
[Z+]Ogr3: I gave up trying
[Z+]Ogr3: When I go over there, he wont even get up from the computer. His wife does, but he wont
[Z+]Ogr3: It pervented a divorce, basically
[Z+]Ogr3: Now they play all the time
[Z+]Ogr3: together
Pretty much sums it out in a nutshell, Problem with human nature is people always have a competitive desire and a longing to be the best and put the time in so they can be, This leads to a huge problem in mmos due to the scale of time you have to put in in comparision to something like a fps where you can play for a couple of hours, With all the things such as leveling, gold mining training and other stuff just eats up time but people always want to be the "alpha male" and will do whatever it takes to be it. I have always vowed to never play an mmo due to this as you can never fully complete or master a game of that magnitude.
So from what ive seen I would say that yes I would say its very possible to addicted to gaming ive known people that are firsthand, But on the bright side I guess a gaming addiction would create a lot less damage to society than people with other addictions unless people commit crime to fund their monthly mmo subscription lol.