[watwut]

I have kids, so it seems obvious to me. It is much easier to coordinate kids related duties when at least one is at home every day. Things like, picking the kids up, taking them somewhere, being there when the kid comes home.

When the kid is sick and not in school daycare, that one person can do supervision. A sick kid usually does not need super involved care whole day, but they cant be left alone whole day either.

[saalweachter]

Just being able to say "I don't commute every Thursday so if I make this commitment for a random Thursday six months from now, I won't need to adjust my schedule." takes a bit of the cognitive load off.

[stevekemp]

When I had a sick baby I could work from home quite happily, but after he grew to be a toddler or older I don't even try.

If my kid is sick I stay home and look after him, sure half the time they'll be sleeping/reading, but the other half the time its just constant interruptions and caring for him.

At least I'm lucky that I'm allowed about ten paid "care of sick child" days a year.

[orthoxerox]

Yes, but this doesn't explain why even a day or two of WFH increases fertility.