We learn in all avenues of knowledge throughout life. As children, we learn about the necessities of life. In class, the teacher will ask her pupils to name a few, and they'll reply:
After this brief verbal intercourse, the teacher will ask her students if there are any other necessities. They'll scratch their heads for a moment, but find their knowledge lacking. She enlightens them:
- "Sexual reproduction via coitus,"
As such, any mature individual knows the importance of coitus and will affirm the need for the continuance of the ritual by all species extant in the biosphere.