because Ethereum is the king of altcoin and the first blockchain to have a smart contract, so of course that makes Ethereum will remain popular and an option for long term investment, because the price of Ethereum will definitely continue to increase very high and will remain in the top 2 on coinmarketcap, so many people believe to investing and holding Ethereum for the long term.
I'm holding long until now, buying Ethereum while it was still at $500. and these top Altcoins certainly make good investment advice besides Bitcoin.
ETH is indeed the king of Altcoins and still no one can get past it. layer 2 projects were also born under Ethereum and are becoming popular today. Ethereum became the main center of the Altcoin that was born at this time.
So buying ETH now for the long term can provide quite a good profit and be more trusted.