Re: The negative impact of mining farms

I'm pretty sure someone will come up with a good solution. Ethereum has a couple approaches that have merit and one will go in to practice soon.
https://forum.ethereum.org/discussion/197/mining-faq-live-updates
https://blog.ethereum.org/2014/06/19/mining/

So you agree that Bitcoin is good enough right now and all the other alternatives are still only "in theory"

Completely agree.