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 realized I had a Lot more fun experimenting and exploring as a kid like in gta Vice city watching pedestrians Walk, Explore the city and see all the interactions there is. Now when I Play gta 5 I honestly just wanna do my missions even though I think it is interesting but I cant get myself to do the Same as before