If God is the source of all things good (love, light, connection, grace etc etc), being separated from him is to be separated from all things good. So imagine an eternity of being alone in darkness, disconnected.
Madness string 96995
To be honest I first noticed it when windows gave me a bsod. and I thought it was an easter egg because putting a little bug icon on a bsod is fitting. And then I saw it when I was photoshopping something and realized it was a real bug.