Immortality.

I have often had nightmares about being alive forever, and I quite frankly don't enjoy the thought. The world is such a corrupt place, I wouldn't be able to deal with it forever. I have often thought about the distant future, like 200 years from now, and it seriously makes me quiver with fear.

Some people argue that hell is different for each person. Others argue that reincarnation is actual. For me, hell is reincarnation.