Basically the title. The more I learn about Ethereum the more I'm convinced it's a scam that has no true reason for existing. The only thing left that I'm not completely sure about is DeFi: is it truly useful and could it perhaps only be done on Ethereum? (I won't even consider other cryptos in this post)
Is there a part of DeFi right now that is actually useful and is not simply trading shitcoin A vs shitcoin B? If so, could it be done on top of Bitcoin, either on top of Lightning or as another L2? Does the more expressive Solidity language actually enable DeFi to work as it should where Bitcoin Script can't? Would new OP codes be required if so?
Thanks!