What if when you die, you're reincarnated as a moth. All the moths we see are souls in purgatory, and the reason moths are attracted to bright lights is because the souls are looking for "The Light."

Each moth travels light to light until it finds The Light, allowing the soul to move on. The better your life was, the closer to the actual Light you are when you reincarnate and so your time to closure is much less than those who led bad lives.