Are we sex-crazed?

Why am I not surprised that people would rather read sex-related topics than about health and life? In a way, health and life still lead back to sex. We want to look good so that we are attractive enough to attract people. We want to keep fit so that we can perform well at sex. We want to be healthy because people prefer to have children with healthy people. We want to receive a good education, get a good job, achieve good social standing and to earn good money because those are indications of one's ability to survive and provide for the family in this time and age.

Are we all sex-crazed? I think it is our in-built urge to reproduce that causes us to behave the way we do. For the male Praying Mantis and Widow Spider that urge is so strong that mating is even worth dying for!