With change in algorithm and rising electricity bills can mining ethereum be profitable again in the future?
Don't know what made you ask about Mining ethereum when it wasn't available in our time now , and aside from that Mining is too expensive than its better to buy and hold.
though there are also available like what said above is staking so choose what to do or choose what best coin to change than ethereum.
and also like what I said? best to Buy ETHEREUM than mining as it is not available to mine now.
Whether it is ethereum or the rest of the altcoins available in the market. Everything rolls around bitcoin market, which means there is assured growth based on the movement of bitcoin. Not everyone understands it, and doesn't have the patience to profit.
all of us knew it but the problem is many don't wanna understand what does it mean so they choose to support shitcoin over Ethereum.