Poor people didn’t have a home with multiple rooms. Children weren’t shielded from the concepts of baby making to the extent that they are today.
The idea that making a family isn’t family friendly is the result of recent cultural norms that are facilitated by our larger homes, cheaper beds, abundant bedding, whole home heating, etc.
In theory I wouldn’t care if it was normal and a necessity, but, prefer my bed to be to myself and my partner, as well as my room. Not cause of what the children might think, but because I like not having anyone else there. So good riddance to that.