Most moral philosophers consciously or unconsciously assume the essential correctness of our cultural sexual code — family, monogamy, continence, the postulate of privacy, ... restriction of intercourse to the marriage bed, etcetera. Having stipulated our cultural code as a whole, they fiddle with details - even such piffle as solemnly discussing whether or not the female breast is an "obscene" sight! But mostly they debate how the human animal can be induced or forced to obey this code, blandly ignoring the high probability that the heartaches and tragedies they see all around them originate in the code itself rather than the failure to abide by the code.

Robert A. Heinlein