Not having lived in the 60's, I can't tell how much of this reflects American culture then and how much it influenced that culture. Definitely seems like an inspiration for the free love movement, while seeming to propose that women embrace being treated as sexual objects. The sci-fi aspect is clearly used a tool to explore the culture of the times, and the usual "vision of the future" side of sci-fi is almost completely ignored. Completely different from Dune, which I recently reread and was also written in the 60's, this says more about what things were like then than what they are like now or in the future.