[Taek]

The main purpose of Bitcoin is not to buy a pack of gum, it's to provide a sovereign store of value with a stable monetary policy.

Bitcoin's energy bills are paid for by its users via transaction fees and inflation. It's a weird form of gatekeeping to single out Bitcoin as 'a waste' when plenty of people create economic waste buying large houses, buying makeup, buying meat instead of grains, etc etc.

If you are concerned about the environment, regulate the creation of energy, not the use of energy. Restricting Bitcoin on environmental concerns will just result in people using more energy elsewhere. But if you mandate that power plants must be X efficient and Y sustainable, the market will naturally figure out how to best allocate the limited energy.