That's a wonderful question and I think that trying to answer it would require greater scrutiny of America in general. Passive-aggressive behavior is on the rise in the US, as is general pettiness. Violence is on the rise, but people aren't clear how and when they have a right to be indignant. The behavior of the entire nation is becoming more and more juvenile. Withholding sex as the result of personal caprice is a very self-defeating strategy for a relationship - it just helps fuel the rising divorce rate.

That goes in about fifty directions at once, granted, but it's still only the tip of the iceberg (to excuse the pun). An entire series of symposia could be held by psychiatrists, psychologists and sociologists about why America is juvenile, why it is violent and why American women have, on average, some very repressed ideas on sexuality.