What's so bad about not receiving Jesus as Savior?

They miss the Kingdom of Glory because they love darkness rather than light, because their deeds are evil.

And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil. John 3:19

• Light, Jesus, has come into the world.
• People loved darkness.
  • Their deeds were evil.
  • They loved doing evil.
  • So they rejected Jesus.
• And so they are condemned.