Why do you think that it is going to die in 2021? I know price is an important factor, but for a second disregard it. Back in march and April, everyone was claiming ETH, BTC, insert altcoin was going to the moon and everyone will be rich. That was a few months ago and price plays with emotions.
l don't know why people think so, but for me, it is so absurd to think that it is going to die this year. That is right ETH has lost 50% of its own price, but that doesn't mean ETH is going to die or something else. Overall the market is changing every day, instead of l believe that ETH will start increasing in the near future and we should use this chance, if we can be enough patient, we can make money from ETH investment. That is why sure ETH will survive in the future.