Teen promiscuity is not a "family issue" to be shared...it IS a problem that more and more parents here in the USA are willing to stop before it begins. If Euro parents (or shall I say "genetic material donors?") are NOT willing to exercise their parental authority and responsibilty, then it's not surprising to see Europe slowly dying and turning into Eurabia.
Your choice, though. Just don't complain when your kids come home with unwanted pregnancies or STDs.
Let's say that one lives in Germany or France, and decides to have a family, but at the same time one is aware of the ever-increasing proportion on Islamists in the population. What better way is there to inocculate your children (girls) against the very big possibility that they will be raped by an Islamist or group of Islamists, than to encourage early and frequent sexuality? I contend that it is more a defense mechanism than evidence of enlightenment or intellectual superiority. They certainly don't have many guns.