It's obvious to see (and hear) how passionate the brothers are about their music. Not to mention most of their songs consist of relatively easy chord progressions (although I realize the bros complicate them), so it's easy for me as an amateur musician to play and sing their songs. Several of their tunes also have nostalgic value to me - Kind of in Love, My Losing Bet, November Blue - too many to count. I just love 'em. They've brought so much joy to my life - that's why I'm a fan.