Ethereum blockchain is very good and fast but fees are so big for me they are too big. I only use it on uniswap and trustwallet. Right now it is not stable but I am holding it for now. I think the Ethereum price has potencial to go above BTC one day. Ethereum should have more attention and more people should invest in it.
If you want to start mine I recommend starting mine Ethereum I didn't try it but if you have some money to invest why not.
ERC 20 blockchain is nice.
With ETH I had only good experience except about fees
What I dont like about ETH is fee, it's too big!!