>>51214165That is only true for a very specific time period, on a very specific part of the world. 20th century conservative european culture is by no means an universal standard.
On the rest of the planet for most of human history sex was not a taboo subject. This doesn't mean everyone was in a constant state of orgy fucking each other's kids, but for the most part sex was just another facet of social life kids would get naturally exposed to.
Also, countryside villages are not the safe heavens of puritanism city people think they are. Your grandma probably fucked half the men who lived there.