This song is often interpreted to be about Dave Grohl letting go of Kurt Cobain, being the last song he writes about him. Cobain has been dead for a while, and he's spoken out about his feelings in songs about Kurt, but it's getting sort of old now. Grohl would try to write new songs, but everyone keeps relating them to Kurt Cobain no matter what he writes them about. He's made peace with Kurt's spirit and won't dwell on Kurt's death any more.
Nicola - Wellington, New Zealand