MM, using that logic, given the number of men I have met who have or said they would cheat on their spouse if the person was hot enough, given the number of people who don't have sex with their spouse, and given the divorce rate today, I wonder why people bother to get married at all.
In any event, marriage is abouta commitment to love someone for life and spend your life as their partner and best friend. A lot of people do not, for various reason, find sex to be an emotionally bonding thing, nor do they love everyone they sleep with. As a general rule swingers fall into that catigory. Anna and I are the type of people who see sex as entertainment, not necissarily an act of love. Have you ever slept with a women for the pure gratification of it, without having deep feelings for her? We swing because we both enjoy it. We are married because we love each other and have commited to staying together.