[michaelsbradley]

And… that’s just not how the time factor actually works. If wife and husband are home during her most fertile time window in a cycle, she will instinctively “find him” for some magic moments that may not be particularly planned or even romantic, rather more characterized by a delightful and clumsy urgency.

[rimunroe]

> If wife and husband are home during her most fertile time window in a cycle, she will instinctively “find him” [...]

Have you known many couples who had trouble trying to conceive? There's a reason fertility monitoring strips, apps, etc. are such a huge market, and it's not because people are trying to avoid pregnancy.

> [...] for some magic moments that may not be particularly planned or even romantic, rather more characterized by a delightful and clumsy urgency.

I guarantee that if you interviewed couples who had been unsuccessfully trying to conceive for a long time a large number of them would strongly disagree with using "delightful" to describe the urgency of sex during the fertility window.

[michaelsbradley]

Don’t misunderstand the situation to which I’m narrowly referring:

Man available to the woman effectively around the clock every day, setting majority of the time is private and comfortable enough that sex can just happen, in compressed and sometimes exciting timeframe, i.e. even if busy with WFH and childcare.

I am aware of couples who struggled or are struggling with fertility, and using the various tools and techniques to increase the odds. I am not discounting their experiences and hardships. I am saying that, on average, if more couples of child bearing age are sexually accessible to one another effectively 24/7, then there are natural instincts that can and do play a role in them coming together sexually at the critical time for conceiving a child, and so more children would be conceived.