The Church(s) has made sex into a dirty, but necessary, thing. Of course, it's alllll wrapped up in control.
Control of behavior.
Control of Procreative Measures to ensure future churchgoers. (Tithes? After all that preacher needs a new Cadillac).
aaand control of women's bodies.
Nadia Bolz-Weber in her new book, Shameless: A Sexual Reformation, takes the church's hands off of our bodies and our sexuality and hands it back to us.
Our bodies, our sexuality, our pleasure is a gift 'of God' (or evolution, etc.) and we are responsible to and for it.
God gave women a clitoris as God gave man a penis.
The only 'used couch' is their bullshit propaganda that they can feel free to turn sideways and shove up their asses.