I think BSC exists to enhance ERC20, not to be rival the ERC20 blockchain, and I like both depending on where I need it. I usually use ERC20 as my long-term investment, and prefer BNB in BSC as my daily trading activity because it is more volatile with low transaction fees.
actually, I really like both, and I've always used ETH too, even collecting it. however, for now, I tend to use BNB. although sometimes I still use ETH, but my activities tend to use BSC as a transaction or investment tool. however, currently I still like both.