The older generations were the first freed by birth control to have more sex, and their rebellion against the established sexual norms (and their parents) is pa

The older generations were the first freed by birth control to have more sex, and their rebellion against the established sexual norms (and their parents) is part of what defined them. Today’s young Germans are growing up in a culture that accepts non-marital sexual relations, there is nothing to rebel against so it is not such a defining dimension of their culture. Furthermore, you could also posit that some of the young people see how the “swinging” lifestyle affected their families. Might have worked out great for a lot of people but probably really hurt some others. I have one swinging uncle who happily swapped wives in the 1980s, but other members of my family just ended up bitter and alone over similar circumstances. Then you look at your grandparents or great grandparents who were miserable, but at least they were miserable together and always had each other :-)