A long time ago, when the Romans came home, they would use a simple clay pot as a chamber pot, and after using it, they would pour the shit out of the window.
So many people suffered, but in spite of this, in the next 1000 years, the Romans didn't think it was wrong to follow this move.
Gradually, I got into the habit of a gentleman walking on the left side of a lady, because it can stop the unknown objects from raiding at any time.