Your teens are probably listening to iPods so they don't have to interact with you. (no offense meant, but I assume you know what I mean.)
Yeah. My Dad (Sonny's GrandPa), likes to tease me in front of him that I went into my room when I turned 13, and didn't come out until I left for the Army at 17. Partially true. I DID come out for meals and phone calls. Had there been a slot in my door, meals wouldn't have been a problem, but of course, he never DID allow me to have my own phone; the Cruel Ogre! :)