You may not believe this, but the view you expressed, is exactly what the Bible states! God told Adam (after his sin), "You will return to the ground."
"The dead know nothing."
Those who die "go down to silence." "Their thoughts do perish."
The only hope is for a future resurrection.
I don't see a resurrection for an infinite afterlife to be hopeful. An infinite afterlife would be, in fact, infinite torture after a few trillion years, don't you think?