
Sure you go ahead & blame that. It's only been, what? Maybe a decade since you finished school. For me it's been a weeeee bit longer. However, I have done puzzles of all sorts for years, kept reading, etc, simply because I'm terrified of losing my cognitive abilities as I get older. Senility gallops on my dad's dad's side of the family. I don't take after them for anything else, but knowing my luck, I'll end up with that!! Doing things that make your brain work keeps you living a healthier life right to the end. :)
BTW, never to late to start stretching your brain.