Atomism, Onanism, Organicism

According to Atomist Psychology, the behavior of an individual human is sufficiently determined by an internal drive that seeks satisfaction of some kind.  Thus, according to an Atomist concept of Sexuality, the foundation of all sexual behavior is Onanism, on the basis of which the role of others is as a means to that private satisfaction, often reciprocally, with the occasional contingent by-product of the liaison.  Now, one difficulty for that theory is that it entails that the parts of the body that are the loci of such activity exist primarily for Onanistic purposes.  In contrast, according Organicist Psychology, Onanism is the result of a double abstraction: from the reproductive processes of the species, to non-reproductive activities, i. e. 'recreational' sex involving two or more participants, to solo recreational sex.  Now, one advantage of this theory is that it better explains the physiological loci of those activities--that they are fundamentally organs of the species' reproductive processes, that can also be recreational.  Nevertheless, in predominantly Atomist cultures, such as in the contemporary U. S., Atomist Sexuality prevails.