They do say that working on puzzles/games is good for the brain and fighting cognitive decline. I waste several hours a week reading chess books and playing so the 'good for your brain' angle helps justify it. No conclusive proof of course but at least it's not harmful!

__________________
“I’ve known Jeff for fifteen years. Terrific guy, He’s a lot of fun to be with. It is even said that he likes beautiful women as much as I do, and many of them are on the younger side. No doubt about it — Jeffrey enjoys his social life.” - donald trump Source