Zero
Why are people bothering to respond if their partners don't game at all
the question surely wasn't aimed at you?
None. He’s an adult.
Adults game too, many games are not meant for children at all.
My ExP and I used to game for hours and hours pre-DC. It was a hobby we did together. Not every day but if we did have a session it could easily last 12 hours. We would, on rare occasions, treat ourselves to a whole weekend of gaming together. Sometimes one of us would be playing a game and the other would do their own thing and just follow the game storyline, other times we would play the same game.
It reduced naturally when DC came along, for both of us. These days he doesn't game much at all (according to the kids) and I sometimes manage an hour in the evening once everyone is in bed as it helps me de-stress (I imagine this is the real case with ExP too). If your partner has anything about him, he will prioritise family over gaming. As with other hobbies, I've heard of people who don't though, so have a hard think about what your own partners priorities are now before committing to having children with him. If he games relentlessly and doesn't give a shit what you're doing then chances are that will continue after DC come along. Some people can't regulate their hobbies and they let them take over their lives.
I always have to laugh at people who just blankly say 'I don't like gaming' or gaming is childish or not creative. It's like saying 'I hate reading, there is always a crime which is eventually solved by a grizzled detective and their new optimistic, perky assistant'. Oh no wait that's literally one small part of a much larger genre of books, within an unending amount of books out there. Open ended building games such as minecraft, beautiful story-lead games like Red Dead 2 and The Last of Us, strategy games, sim games, sports games, fighting, RPG, exploration, MMORPG, so many damn types and and ways to play it'd take days to list yet all chucked under this umbrella of 'gaming'. Hur dur, gaming bad, only kids game. Such a childish declaration.
I have nothing to add about this comment, just think it bears repeating. In bold.