Nothing lasts forever in this world, even if it's a coin. But having hope is also very important. We always hope that ETH and other coins will always have a good future ..and grow in the long term. It all also depends on the voltage in the market space. If ETH enthusiasts and investors grow, I think he will have a long future.
I agree that nothing lasts forever, but what really can kill Ethereum? Switching off all the miners? Making claims and accusations against Ethereum and its creators?
I think it is nearly impossible to kill Ethereum, as there are so many projects running on Ethereum network, that wont simply leave or migrate to other blockchain so quickly, that newer projects wont have time appear and devs have time to power off the network.
It has been many years that Ethereum DNA Network has been developed to be used by many projects. not because of the problem of high transaction fees, then it will kill ethereum. I'm sure that won't be possible.
ethereum has grown enormously with a strong community. they dedicate their time and money not only in a short time. we saw how ethereum grew from the bottom to the top. of course, it will be difficult to overthrow it.