nah. bitcoin is good. 

1. long ledger allows someone to verify the blockchain since the beginning. proof of stake does not have this property. 
2. i would say it has just about the right amount of transparency. but your mileage may vary.
3. you can use lightning and cashu for faster tx.
4. huge energy is not a waste. the hodlers of bitcoin are paying mining companies to secure the blockchain. hodlers need 'flow' and flow is provided by mining companies. hodlers pay mining companies for this work thru inflation. nothing is wasted.
5. if mainstream is adopting it, why would this be a problem. that was "the dream". 

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