Amazing how people come with all these rationalizations instead of just accepting that they are not the kind of people who like casual sex. There's nothing wrong or unhealthy about casual sex, it's just not for you. You can have your loving sex all your life, nobody will force you to have casual sex.
About orgies, it bothers me how much people who never frequented these circles have so many opinions about how bad or unhealthy they are. I know religious people who have the "healthy sex life" and are completely deranged. I could say that they are that way because of their sex life, but I would be as wrong as you are.