Kids these days have changed, they know a whole lot more then when I was their age. The internet have brought kids forward a whole lot faster than before
It's normal nowadays to hear kids barely into puberty talking about sex, gay relationships, porn and what not. There's little to no way we can stop them from being influenced by the media that is readily at hand to them, so it's in their best interests that we guide them so they understand more about such topics, although my own mother is against it.
During my time, all I cared about was hopscotch and meeting my neighbours to play 'cook' and 'make me up'. How times have changed!