There are pros and cons for either demographic: whilst being older may be ideal since not only you bypass age restrictions, you also have the capability on purchasing it with your own money without having to ask parents for that given that you have employment and recurring income. Gaming as a kid gives more time without having to dwell much on responsibilities that adults have to worry about but at the same time are held by school.
I think most people will say that as adults they get to play less games, but I have very much the opposite experience. Not to say I’m playing games 24/7, but rather I wasn’t allowed to play much as a kid. 15 minutes a day, and then when I was in high school I got 30 minutes on weekends. I can get that kind of gaming in if I just play on my phone on my transit lmao