Albert Barnes Commentary Ecclesiastes 6:11

"Seeing there are many things that increase vanity, what is man the better?" — Ecclesiastes 6:11 (ASV)

Things - Namely, the various circumstances detailed in the preceding chapters, from the Preacher’s personal experience, and his observation of other people, ending with the comprehensive declaration in Ecclesiastes 6:10 to the effect that vanity is an essential part of the constitution of creation as it now exists, and was foreknown.

What is man the better? - Rather, what is profitable to man?