@gandalf86 PoW has its disadvantages but it also truly works. PoS is also good but there's one disadvantage that gets unnoticed, that is people keep their funds in custodial exchanges. Which allows exchanges to take users funds and stake that and become validators.

Energy usage of PoW is bad. Though remember energy usage isn't bad. Energy generation from non renewable is. So it depends how the energy used to mine was generated. It's good if it's more solar. Bad if not.