For me, ETH will always be better than BSC. Due to the low gas in ETH I recently started using ETH even more often than BSC. There are no innovative projects in BSC so I don't think I will be here for a very long time.
for now the cost of the BSC network is much cheaper than the ETH network, and this is a fact that is happening today. I admit that the prospects for projects on the ETH network are more promising, but most people prefer projects on the BSC network because the transaction fees are much cheaper. according to my observations nowadays it is very rare for new projects to be on the ETH network as developers avoid high fees when sending tokens to investors' wallets.
Actually the high cost of gas on ETH has its advantages, of course only large projects can participate in the ETH network, and look now there are many large and dominating projects in the market, for example, Uniswap which has a transaction volume of more than $2 billion per day, and of course costs expensive gas will be meaningless if the profit obtained is greater.