In general, I want to say that there are currencies whose steadfastness and decline depends on the success of other currencies.
- if Ethereum succeeds, it will survive, and thus currencies such as CARDANO, Polygon and others will die {decline}.
- Most of the altcoins depend on the success of ether, and thus its success will lead to the creation of new currencies.
- All platform coins will disappear when new and powerful decentralized platforms appear.
If we go back, we will find that most of the first TOP 10 of cryptos disappeared within 5 years.
Every point is true here, But for ETH I believe it will surely survive. You know, Bitcoin and Ethereum are legends and most people trust these two blockchains. I don't compare Ethereum with Bitcoin but you have to agree that ETH is the legend of all altcoin. Sometimes speed, supply, tx fees, and gas fees are nothing when it comes to trust. Bitcoin and Ethereum are cut high transactions fees rather than other altcoin and both of these are slower than newcomers like Tron/BSC projects. Tron/BSC are able to perform thousands of transactions within <1 second, But people trust BTC & ETH. That's why its price is top. So, in long run, ETH is really a good investment besides Bitcoin.