> Fair point. All I was trying to show was that currencies like the Euro or USD has greater than zero energy usage to create/distribute. How many cash transact

> Fair point. All I was trying to show was that currencies like the Euro or USD has greater than zero energy usage to create/distribute. How many cash transactions occur in the world in 1 year? The number must be over 7 trillions assuming average person on this planet makes 1,000 cash transactions per year. Now, let's divide 1 TWh by 7 trillions, we will get 0.14 Wh per cash transaction which is equivalent of having 60W light bulb switched on for about 8 seconds. Considering one Bitcoin transaction currently consumes 345 kWh of electricity. That's equivalent of having 60W light bulb switched on for about 8 months. So yeah, technically you are right. 8 seconds is not zero. But it's hell of a less than 8 months.