How much longer will Ethereum be mineable?

Ethereum is implementing an upgrade called Arrow Glacier. This will delay to June 2022 the onset of a “difficulty bomb” that could halt mining of the Ether (ETH) token. Ethereum is shifting from a proof of work to a proof of stake model. Ethereum 2.0, or ETH2, is not a new cryptocurrency, but that new model.9 Ara 2021

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Why is ETH profitability so low?

ETH estimated rewards are calculated based on different network factors, but the factor that mostly affects the estimated rewards (in ETH) is block reward . 2 ETH is base reward miners always receive, while dynamic transaction fee depends on how much users of network are paying for transaction to get confirmed.

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