Free? Who pays for the blockchain? Last I looked into it, each transaction requires about enough electricity to power a house for an entire day. That isn't very free.
That's an average including all the mining rewards, it's not actually paid by people issuing transactions. A simple transaction on Ethereum costs about a penny.
I agree the energy consumption of present-day blockchains is a problem; hopefully proof of stake will fix it.
I agree the energy consumption of present-day blockchains is a problem; hopefully proof of stake will fix it.