There is something just so comfortable and dependable about the I,IV and V chords. The rest of the world may be unpredictable but I know the chorus will resolve on the I chord. And holding a well made instrument and feeling it vibrate against your chest is a feeling that technology will never be able to give me. And harmony parts with good friends around the table or in front of an appreciative audience? It's a wonder more folks haven't figured out why we're so hooked on this thing called folk music.