36 here, I would say I average anywhere from 3-7 hours a week (skewed very much towards the low end). I actually started waking up some days at 5am (typically get up at 6:30 for work) just to get some extra gaming in.
Issues for me:
-My wife dislikes video games, so not something we can enjoy together
-I have a 3 year old, and another one on the way, which makes it extremely difficult.
-I'm a big destiny fan, which demands a lot of you from a scheduling and time commitment perspective. (every raid I've done has had to be scheduled well in advance). I'm the ultimate solo destiny player, though not by choice.
-My job is fairly flexible, but my wife's isn't, so any of my downtime is spent helping out with chores and the children.
-I've been taking the CFA exams for the past 3 years, which is complete torture (3 exams offered once a year and requires about 300-400 hours of study per exam). So for 6 months out of the year for the past 3 years, I've been working on that during any free time that would have been used for gaming.
I assume that once i'm in my 40s, the kids will be older and the routine will be a little more established, so I might be gaming quite a bit more. But right now I'm in the thick of the family / career thing, so gaming is very much an afterthought. Sucks, but life is about tradeoffs. My desire to game comes way after my desire to be a good father / husband. A little sacrifice now should hopefully pay off down the road.