Be disgusted. Every website on sex or incest in Japan, just quotes this one site called "Growing up Sexually" which somehow finds all of these weird and outdated writings and compiles them to show this really twisted version of Japan. Thanks for that, I couldn't accurately pick out what parts were "true" (none, apparently). I think you've got the idea across. It's just hard to figure out these new trends; teens having sex, married couples not having sex, young unmarried people in relationships having sex, young 草食男子 not having relationships...