Telle me also, to what conclusion
Were membres maad of generacion,
And of so parfit wys a [wright] ywroght?
Trusteth right wel, they were nat maad for noght.

– Geoffrey Chaucer

The Canterbury Tales, The Wife of Bath’s Prologue. A simple and effective logic is used by the Wife of Bath when she asks why were humans given sexual organs by such a perfectly wise workman as God. They were not made for nothing, she says arguing that sexual activity was part of God’s purpose.