Does anyone find the concept of "eternity" frightening?

The average life expectancy is 71 years, but the afterlife expectancy is unknown. Some religions advocate reincarnation, yet others, notably Abrahmic religions, believe in the existence of heaven and hell. Based on our actions in this finite time of approximately 71 years, we will be judged and condemned to either heaven or hell.

For eternity.

I believe that eternity is a concept our human minds cannot fathom. Perhaps if there is such a thing as heaven, then our minds will transcend the current limits. But to me, the idea that we will exist forever is very unsettling, even if I were to end up in heaven.

We will never cease to exist. Forever, we will continue to live.