FKK nakedness should not illicit a sexual response
This is the part I just can't understand. We're talking about (1) adults and (2) adults from a Western culture. If nakedness among adults was common and non-sexual in Western culture, then fair enough. But in a culture where it's so often associated with sex? Unless the men who go to nudist events are left cold by the photographs of naked women in the Western media which are designed to titillate men, it's hard to imagine that they don't get something out of seeing naked women in the flesh (even if it's confined to their minds). It's difficult to suspend disbelief far enough to accept that all
adults with that kind of cultural background can just switch off like that and go to nudist events with the purest and most prepubescent of outlooks. Some may be able to switch themselves off and regard each other entirely innocently, but can you be sure that all
of them will be like that? Plus, the argument that nakedness = egalitarianism is difficult to believe too. Just as in the animal world, there's got to be some kind of pecking order.