Thanks to all who commented on our original post. Always good to see discussion.
A few observations.
Most of us on this board live in two worlds, the vanilla world and the LS world. These are, in the jargon, "alternative lifestyles". When we pass between these two worlds, we carry not only our physical selves but also some system of values. Indeed, it is precisely those systems of values that not only enable us to inhabit both worlds but also to find sufficient satisfaction in those worlds to keep us going over and back again.
The vanilla world encourages violence as entertainment yet discourages sexual expression except in narrowly circumscribed situations.
The swinger world encourages sexual expression among consenting adults and discourages violence except in the narrowly circumscribed situation of consensual role play.
Yes, there are monsters in both worlds. It seems odd, though, for a civilized society to label the vanilla world "normal" and the swinger world sinful, aberrant, destructive etc. Yes, it's hypocritical. But the deeper question is why the hypocrisy persists.