This is a false dichotomy. There's no reason why the sole options should be shtupping in front of the kids or child-abandonment.

Children deserve their privacy too, as well as time spent with others.

I don't think that a child would be traumatized by witnessing adults rutting. But I do think that they might find it stupid or dull. Most intimacy is only interesting to the parties involved; as anyone who has tried to socialize with a couple making cow-eyes at each other has discovered.

That said, I do believe that I performed a quantum leap under the covers when Luz's son Tommy woke up and walked in on us. Also Ellen was pretty jealous of the time I spent with her mother initially. But she soon learned to infer that the duration of our disappearance was inversely proportional to the time spent apart. ( Hair trigger when its been too long.) And we saved any marathon sessions until time when the girls were visiting their dad or out with friends.

In some societies the lack of privacy is part of a child's sex education. But looking only provides so much information.

Dante