Exactly. That's one of the things a lot of people expect from their boyfriends / girlfriends - to completely give up on their interests, their hobbies, and entirely dedicate themselves to them. Sooner or later, the feeling of resentment will set it and with time will grow into anger toward the person who basically blackmailed you into abandoning your interests, in this case a boyfriend or a girlfriend. And what happens next? Fights and arguments ensue, especially if the person who was forced to give up on his / her interests feels like his / her boyfriend / girlfriend hasn't made any sacrifices for him / her, whether it be true or not.
Gaming has always been (and probably will always be) branded as something that is meant for little kids only. Adults who indulge in gaming are considered childish, immature, unwilling to grow up and act like adults are supposed to act, which usually comes down to 'get out of bed in the morning, go to work, spend your day at work, pay bills, come home, do all the chores, go to bed, sleep and repeat everything the next day' routine. If someone tries to squeeze some gaming in the midst of all that, he / she can expect someone to give him / her the stink eye and / or verbal lashing for committing such horrible crime against the world of adults. At the same time, no one has a problem with adults vegetating in front of a TV, but the mere mention of the word "game" automatically sets off all alarms.