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.
For me it’s much better as an adult just because I don’t have poorly informed adults scaremongering over the latest bullshit the news made up.
When I was a kid my mother would immediately jump on every single “the kids are bad” bandwagon there was. As a result I could really only play games at friends houses because were weren’t allowed to have video games of any sort. I even bought my own xbox and tv so I could have it in my room when I was 14. The moment she found out she threw it away while I was at school. Never mind the fact that I had spent 500 dollars of my own money.