I think it’s just tradition. Japanese people are very rigid and notoriously against change. Also, they are about community. The water I use may have an effect on the water available to my neighbors possibly?

This is me guessing. At the end of the day, you soak after a thorough shower, then maybe the water is clean. Just add hot water the next day and keep it pushing.

State side, in Florida my family of three would use 4K gallons of water a month. You know how much it cost for the next 5K after using more than 5K?

$5. Idk of Japan’s water is more expensive but we have it good in the states when it comes to water and sewage.