system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any known cultures where it is or was common to practice sex openly in front of others, including children?
gpt
I am not so sure about this one. Our anthropological sources, who were mainly missionaries or 'proper' 19th century men, were not so keen on recording sexual practices, and if they did, they often did it with an exotic message in mind (to show how 'uncivilised' or different other peoples were).

I read that in the Middle Ages in Europe, sex would have been openly practiced in the house, so in front of one's own children, as there was often only one bedroom. Also, in inns sex would have been public, again because of the single sleeping quarter available. Couple this with the double function of many inns as brothels, and you get almost roman orgy-like things going on in those places.

I think it would be safer to put the question the other way around, and question in which societies, and how strongly, the taboo on sex was maintained.