Forever suffering. Everlasting pain. Infinite torment. Immortal.

Immortality, doesn't mean... Invincibility.

Immagine... Crushed by a rock, and being paralyzed... You can't move, you're just a vegetable, laying on your bed. Forever. Or maybe, a disease, one that eats away at you, and causes you suffering. Suffering you cannot stop. Until your just a skellaton, unable to move. They lay you in your coffin, unknowing of your living, and you live the rest of eternity, alone, deep in the darkness.

Horrific. Terrifying. Frightening. Immortality.