Then prepare for more “weird” guys. And girls, for that matter; anyone of either sex in their 30s or younger has most likely played video games for their entire life.
The NES launched in the US in 1985; even someone at the top end of the nebulous “30s” bracket would have been a young teenager and started gaming then. Everyone in their mid/early thirties or younger has always lived in a world where video games existed.
No one bats an eye if someone watches TV for 3 or 4 hours a night; if they spend that time playing Final Fantasy, Call of Duty, or World of Warcraft instead of watching American Idol, Hoarders, and Pawn Stars, though, that’s beyond the pale.
I think the root cause of the complaint regarding guys playing video games isn’t so much that they’re playing games; it’s that they’re not paying attention to the girl in question (there’s essentially no difference between complaining about a guy gaming all the time and complaining about a guy watching sports all the time).
Not everything a guy does has to revolve around you. Forty-two per cent of gamers are women; maybe if you actually tried out some of his interests instead of just complaining that what he likes doing is weird, you might find that you like video games, too!