In fact, the family, which is the basic social unit is where we learn to communicate, where we adopt our values, and the survival skills that will take us through life. We have a built in need to understand the world around us. We want to learn, not merely for the sake of survival, but simply to understand. We see the intense curiosity of children as evidence of this. Sex is not a sin, nor is it the cause of all evils.
Sex expresses the joining of two people in the most intimate way.
It both preserves personal diversity and distills unity. In this respect, sex reflects God's intimate unity in the trinity. As the creation narrative ends, man is in harmony with God and with each other. Adam and Eve are not ashamed of who they are. Their identities are secure and they can be completely vulnerable.