Ecclesiastes 4:15

4:15 I considered all the living who walk on earth,

as well as the successor who would arise in his place.

Ecclesiastes 4:8

4:8 A man who is all alone with no companion,

he has no children nor siblings;

yet there is no end to all his toil,

and he is never satisfied with riches.

He laments, “For whom am I toiling and depriving myself of pleasure?”

This also is futile and a burdensome task!