Several of the totally OG cryptographers, like Chaum or Micali, have created blockchains that are using PoS (Micali is behind Algorand and Chaum behind an upcoming "elixxir" coin I think, forgot the name).
Of course there's also Ethereum which is currently switching to PoS.
Cryptocurrencies haters better find another argument than "energy consumption" because I think the gigantic energy waste is coming to an end soon.
EDIT: Also, very insulting of you to assume I use crypto, I prefer to stick to filthy, worthless fiat thank you very much.
Bitcoin uses whatever energy is available. The answer is better laws
>> If they can be recreated, the person can be monitored to determine how to recreate the wallet and then be drained.
Being unable to use the Bitcoin is the same as confiscating it.
Bitcoin offers a decentralized, supply capped alternative to central banking.
If this seems useful to you, use it, if it doesn't, don't use it. Simple as that.
Currently people find the ability to have unconfiscatable money attractive.