Frankly, I find it astonishing this is still a question people need to ask themselves. Games are just another thing people do to be entertained and pass the time. They are interactive entertainment that sits part-way between puzzle solving, dexterity test and television. No-one suggests at 36 you should throw your telly out of the window, or at that 43 you should stop doing crosswords. But gaming has somehow been labelled a juvenile pursuit.
In part, this is down to short memories. Arcade games when originally created were aimed squarely at adults. Early home-gaming systems were largely in that space, although often also marketed as family entertainment. It was mostly with the arrival of NES-era consoles that gaming took root as something ‘for the kids’. Only, those kids grew up, and a big chunk of gaming grew up with it. Today, the range of games you can access is huge, from tablet-based fare like Thinkrolls that my then two-year-old managed to grasp on an iPad, through to the kind of content that no-one under 18 should really be setting their eyes on.
Any negativity is really just another oft-repeated hot-take by curmudgeons and spoilsports who hate people liking stuff that they themselves don’t like. Comics? Pah! Those are for children! (What, even Saga? OK, then.) Tabletop gaming? Are you twelve? You still watch Doctor Who? Pfft! Etc!
I turned 50 last year, and while I may not have the reflexes for modern first-person shooters, I regularly enjoy plenty of other types of games, both on my computer and tablet.