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.
It’s an odd and mixed experience for me: I definitely enjoy it more now because I’m definitely a lot more aware of the genres I enjoy and the genres I typically don’t; however, the uncontrollable excitement of playing through Streets of Rage 2 for the first time is not as palpable as it used to be back then.
I’d say in terms of quantity (frequency) I am having more fun now. In terms of quality, fun felt fresher and deeper back then.