My city is in the middle of the worst drought in recorded history. My showers are typically under 2 minutes and I have to shower with a bucket to catch otherwise wasted water to use to flush the toilet. I also shut the water down when I am wet enough so I can scrub myself without having unneeded water flowing then start it back up to rinse.
Plus, water is damn expensive!
Who here really has the time to stand, think and waste in the shower?
Little known fact that modern pipes can summon water out of nothing
There are the centuries old rock structures that extract moisture from the air via condensation though. Maybe they have some of those?
Modern by the universe timescale standards.