Hm. I've been buying/playing/liking video and computer games for thirty years and counting now. I think they're splendid fun, and I do enjoy a couple of gaming weekends every year. We just did an orchestrated coop run on Dead Island, and I believe we've easily seen everything over the course of two weekends.
Compared to kite surfing, boar hunting or parachuting, playing games should be a comparably cheap pastime.
But I do believe some folks manage to overdo it. Some guys I know always have the latest titles for every console there is. Some even preorder for the next, what, six months or so. It is always these poor fellas that don't have enough money for holidays, proper food, that new car they need or whatever it is they should get instead of all those games, really. Some of them are actually rather big earners, but still they don't manage to put anything aside. Too much money? Taxes not due for another six months? Easy, get a 3DS!
Incidentally, it's also only these guys that keep every single game, no matter how useless and crap it is. With all their different characters and lifestyles, they're basically hoarders when it comes to games. Even if they had no jobs, they'd need a couple of lifetimes to play through all the games they've amassed. When I am not careful enough and I end up owning a crap game, and I find out while i play, I usually stop playing immediately and I have the game disc burned/run over/cursed/disintegrated/blown up. These folks are either OC'ing on their gaming or they have insane amounts of optimism, hoping it will get better (which, of course, it never will)...
Oh, and about half of them suck terribly at any team-based or strategical online gaming. One got sucked into our WC3/SC2 vortex and ordered himself Starcraft 2. So we all went to his place when his parcel arrived. We set everything up, and he insisted he'd play against the best SC2 player available. Needless to say, he lost terribly (humiliating zergling rush) and that was his one and only game of SC2 he ever played. We still got drunk and had a splendid time, but mentioning Starcraft 2 now just feels wrong around the guy.