For what does a man get for all the toil and striving with which he labors under the sun?
Business is a thing that wise men have pleasure in. They are in their element when they are in their business, and complain if they be out of business. They may sometimes be tired with their business, but they are not weary of it, nor willing to leave it off.
Commenting on Ecclesiastes 2:17-26
For what hath man of all his labour, and of the vexation of his heart?.... What profit has he by it, when there is so much vexation in it, both in getting it, and in the thought of leaving it to others? What advantage is it to him, when it is all acquired for and possessed by another; and especially of what use is it to him after his death?
Same sentiment as in Ecc 2:21, interrogatively.