Why Am I Doing This?

This evening I visited my favorite classical homeschool board.  While skimming their high school sub board, I felt a bit out of place.  Very little of what was being discussed interested me, and I realized that my homeschool goals aren't the same.  Why do we require our kids to learn these things?  Is it going to help them grow up to be happy adults?  Probably not.  It is making me seriously question what we spend our time doing.