The Lights Going out in Heaven Might Be Best for 'Supernatural'

Castiel has almost never had a good relationship with Heaven on Supernatural. Cas might be an angel, but he's been public enemy number one of Heaven almost as long as he's been a character on Supernatural. However, that didn't prevent Cas from learning some rather horrific news in the episode "Funeralia." There's only a handful of angels left, including Castiel, and Heaven is dying. While Cas is determined to fix Heaven's problems, it may be best for Supernatural just to let Heaven go.