Life reproduces itself. The impulse to replicate is embedded in our most ancient genetic code, with which we share some variant with all living things. It is the foundation of natural selection, enabling animals to test possibilities for improvements in how successfully we interact with our surroundings. The impulse to live and the impulse to mate are blended so deeply they are perhaps expressions of the same primary core impulse. The rituals of mating are designed to select optimal body plan improvements, ensconcing mating rituals in the evolutionary success of each species. Mating is so deeply intertwined in how we respond to environmental cues that we are aware of only a fraction of our mating communications. Sexuality is the expression of the mating drive, and experiencing how sexuality operates somewhat independently of conscious control informs us both of how ancient this drive is as well as allowing us to experience how our own instincts are still active.
As these impulses essentially define which members of a species survive, they conflict with the consolidation of power and other group dynamics beyond primitive tribal social structures. Socialization depends on regulating mating as well as all other instincts, replacing the rule of DNA with the rule of law. In addition to integrating guidelines for sex behavior into deity worship, male and female circumcision was adopted, which in essence derailed many of the sex reflex responses. Inhibiting the sensory aspect of sexual stimulus response loops in this way partially dys-regulates sex drive. Removing sex drive as a primary motivating force simplified long term compliant behavior, a hallmark of socialization.
Reflex responses which are so deeply embedded in our neurological and biochemical self regulating mechanisms cannot simply be turned off however, and the dys-regulation engendered through circumcision can be predicted to have negative health effects. We are only now becoming aware of what some of these effects are.
Here is a link to a new NIH study on male circumcision, finding strong correlations between sexual satisfaction, for both partners and intact male sexual organs. Additionally, it includes findings related to depression and sense of well-being. It is logical to predict that there are other significant findings related to longevity and overall health, in the same way that regular sexual activity is recognized to contribute positively to these issues.
Male circumcision and sexual function in men and women: a survey-based, cross-sectional study in Denmark
Wilhelm Reich, a student of Freud, wrote at length about healthy sexual function. Here is a compilation of some of this work:
The Sexual Revolution: Toward a Self-Governing Character Structure