Might be the other way round in fact. Who knows where the majority lies. It seems to say the other way round to how you put this.
I think those in my sea just have a different perspective on what language to use when referring to sex between two people. Like I said before, It is not a right or wrong thing. Every couple have their own protocols when the doors are shut. Also the two may differ in views between them. There are many variables such as language, Expressions, time, Lights on/off, night clothes on/off, etc.
I have a friend who cooked and ate before her husband arrived home just so she could sit and watch him while he ate his food. she found watching him eat very exciting. Why do we do what we do? Who knows? Does it matter to anyone out there? Possibly not. But it should matter to the spouse.
Plenty in the sea indeed, tuna, cod, Mackerel, crabs, seals, coral, whales, barracuda, shark, dolphin, etc It would be odd if they all started behaving the same way.