But when I offered to teach her how to play so that she could play a game of her own (as opposed to watching over my shoulder as I played) she declined. I asked her if it had anything to do with the exploding bodies that occurred with each kill (since I morbidly enjoyed it, I thought she might, too), but no that wasn't it, either. To this day, I'm befuddled.
Some people simply prefer to watch, rather than interact. They can mentally step back and appreciate the story, instead of getting caught up in the mundane details of which button does what, and what they need to do to advance the action. And they can enjoy your enjoyment, which comes partly from your having worked hard to develop a skill set they don't share.
My niece and nephew love playing Skylanders Giants. And I love watching them play it. But I've never played the game myself, and I doubt I ever will. From a moviegoer's perspective, the puzzles and challenges are fun, and the interactions are often funny; but from a player's standpoint, it's just not my thing.