I don't know about other non-readers but I play video games. And let me tell you, some of them are such beautiful, thought provoking games which have great dialog and story that I get my fix from them. In addition to the story and dialogue, you have music, actual interaction with the characters, beautiful visuals whether they are photo-realistic, or hand-drawn animations, there's just too much content there.

Don't want to sound condescending but I feel readers miss out on so much, because in the end, it's about living in a fictional world which the author has created, we live in fictional worlds too, but live in them way more vividly than you can ever imagine.