[TeMPOraL]

I agree with your points - though I think you're underselling the "even if it seems scary" bit.

I love your bathroom example, because it speaks to the same need as the "car commute solo space". You say:

> it is conceivable that I could have just gathered everyone and made some agreements about what we all need, including sometimes privacy and quiet

And the same is be true of me (having small children too), and of the aforementioned commuters. We could. But, for some reason, we don't. Can't explain it, but the very idea feels truly scary. That's why the comment upthread resonated so well with me - I don't drive, but I understand striving to get "solo time" in a way that doesn't have to be justified directly, but instead is a plausibly deniable side effect of some external necessity (like having to commute to work).