the kids in elementary schools were born into the digital age. they're digital natives from the get, and are probably more comfortable using digital tools than we are
* Most kindergarteners are illiterate and innumerate. That alone severely limits their ability to quickly navigate an unfamiliar, complex UI, much less the extensive number of relevant abstract concepts and references they've yet to learn about.
* I've never bought into the "you can't teach an old dog new tricks" mentality, especially when simultaneously discarding the value of transferable experience. My senior-citizen parents know how to use iPads just fine, thank you. My dad started programming in the punch card days and has at least used computers almost every day since; don't you think there's some relevance to more modern computers?
It's not all of them, and it may not even be most of them...but it's enough that I spend a decent amount of time handling it. Of course that's part of why I get paid so I'm not really complaining--more just surprised at times.