Out of all the necessities in the world, three come to the forefront: food, water and reproduction. While the former two are necessary for the survival of the individual among the many, the latter is necessary for the survival of the many. Thankfully, most people tend to enjoy the process, but in some cultures, it goes far beyond enjoyment. It is valued as an art and worshipped as a religious ideal. Most simply call it sex; others call it a way of life.