What is one gallon (3.75 litres) of water worth to you?
In many parts of the world, a toilet is composed of a seat, a bowl full of water and a reservoir of water.
While your derriere warms the seat, you eliminate waste products (e.g., urine, feces) into the bowl and then use a levered mechanism to flush out the bowl, replacing its contents with the water in the reservoir.
A simple procedure.
Some of us are trained to drain the bowl after every use.
Some of us are trained to conserve water and drain the bowl after more than one use.
Some of us have no idea how to use the toilet, growing up with other means of eliminating waste — a hole in the floor, a hole in the ground (over which a wooden hut is built and then called an outhouse), writing your name in the snow, doing your business on the grass and covering with leaves, etc.
I grew up with unisex toilets in the home and gender-based toilets (bathrooms or water closets) in public buildings.
I don’t know how the people who avail themselves of the facilities designated for women in public places use the toilets.
In the unisex toilet at home, our parents taught my sister and me to flush after every use.
In the men’s room in public places, I have observed over the years a variety of behaviours, from clean, flushed toilets to bowls overflowing with waste and toilet paper. [We have a toilet in the men’s room called the urinal but that one is eliminated from this discussion to focus on the more universal product for receiving our waste.]
When water is scarce, a gallon of chlorinated/fluoridated water mixed with waste products is as precious as some metals.
In that situation, what is proper is not prudent.
However, where water is abundant and treated water is inexpensive, let’s be courteous to those who’ll use the toilet after us and flush our waste away.
Surely, we’re educated and domesticated enough to handle that simple a task, eh?
There are plenty of other public places of your life to demonstrate your barbarian behaviour to better advantage.