Just though of some research I did years ago that might be of use to the list on this topic. It may support the view that the sex drive is an extropian force.
A rough draft of the paper SEXUAL PERSONALITY AND LIFE SATISFACTION ( it was scanned from some ditto copies!) may be found at:
the associated graphic is at:
Ralph Lewis, Professor of Management and Human Resources
College of Business
California State University, Long Beach
Long Beach, California