BNB - an artificially created coin for the simple cause of trading and reducing fees thus attracting more traders to the Binance platform
ETH - A blockchain, not fintech, focussed token that has opportunities for real life use cases build upon.
For a random, trader, both coins are of interest, but as from a sustainable and long term ivnestment point of view, BNB can be neglected. What if CZ makes a mistake or Binance gets hacked? The price will plummet into oblivion
on the other hand eth is quite protected and more decentralized, and as you said has a lot more opportunities for real usage
I do trust bnb and I do trust eth
however I do believe in ethereum and their eth, cant say same about bnb