Both cryptocurrencies have their respective advantages/disadvantages. I've said this many times already. None can replace the other, because they serve unique purposes in real life. Comparing Ethereum vs Binance Chain is like comparing "apples vs oranges". BSC may be fast and cheap to use, but it's utterly centralized. Ethereum is decentralized, but it suffers from low transaction throughput and high gas fees. The person can use each Blockchain network's weaknesses to his/her own advantage. For short-term trades or micropayments, Binance Chain is the smart choice. But for sending large amounts of money across borders, Ethereum is the winner. How long will these cryptocurrencies last, is beyond me. What's important is not the cryptocurrency itself but rather the technology underpinning the cryptocurrency. Blockchain is what it's all about these days in order to make our world a better place. As long as Blockchain tech works as intended, nothing else matters. Just my opinion