I read this from an article, which was certainly thought-provoking:
All this ties in with a discovery Oxford anthropologist J.D. Unwin made as long ago as 1934 in his study, Sex and Culture (Oxford University Press).
Having researched more than 80 cultures past and present on this subject, Unwin discovered that societies, which do not impose some restraint on their sexual behavior, cease to develop significant social energies after only one generation.
Conversely, when social regulations forbid indiscriminate satisfaction of sexual impulses, the emotional conflict is expressed in another way. In other words, civilizations are built upon sacrifices in the gratification of innate desires.