It's always been around, people just now decide it's not okay because they have "morals". Learn about the romans, they did the olympics naked. Everyone walked around naked. They had "baths" in the middle of town that everyone bathed in naked.
Welcome to Testriffic. On one side of the spectrum, we have pious individuals who love to be uptight moralists and shun everyone for being depraved sex hounds. And on the other side of the spectrum, we have the depraved sex hounds who just discovered attraction to the sex of their choosing and then seek physical and emotional connection to those they lust after. And there isn't much of a middle ground, considering the average age of posters around here isn't old enough to sit back and learn from both and figure out what really was/is the best solution to this new found sexual discovery they have.