> How do people move in the rain

I mean Historically when I did that sort of thing I'd have a change of clothes if necessary, but otherwise I never really minded riding in the rain. Or light snow.

> or when they're on their period?

I'm sorry, what? (I actually do have anecdata based answers for this but I don't want to risk offending your sensibilities.)

> How do you transmit tons of material on bikes? > How do they move multiple small children or being home furniture? What do old and sick people do?

Cool! There's more room on the road for that to happen.

But in general you're implying a dichotomy where none exists.