Dying vs being dead?
Dying can be quick and painless. No prob.
Dying can be protracted with intense suffering. No thanks.
Being dead. That's how we started out, non-existent. The science is unanimous - we cease to be when our bodies die. I believe this.
We can benefit from spiritual values that make us more human and tolerable to others, without expectation of post-mortal elevators, going up or down.
So, minimizing suffering through life, by taking care of our minds and bodies, seems worthwhile to me. Worrying about returning to our re-non-existence serves little purpose, other than to make our days of life more precious.
