My wife has zero interest but totally doesn't care what I do game-wise. She is cool with me buying what I want and playing as much as I want. I never abuse it though and only play a few hours each week at most.
Pretty much the same. BUT i do abuse it. Start WoW about 9pm and go to 12-1am pretty much every night and before work in the morning. Thing is, its actually very cathartic for me and lets me blow off work stress. It took some time, but i think she actually understands it now and lets me do what i want.
The times i play are after the kids are asleep and after they go to school, so it doesn't interfere with them at all. She watches her reality shows/soaps at night, so that's not an issue either. In over 15 years together, i've never once seen her play a single game. She thinks it's weird that a grown man with kids plays games, but i don't really care