Many people out there don´t believe that Ethereum can be a long term hodling, they simply use it participate in ICOs, sell and buy bitcoin again with the profit. Do you think that may change this year and ethereum can be seen as the choice to hodl?
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The reason ethereum may not be considered HODL material, could be due to its variable supply. We all know bitcoin's "supply" is limited to 21 million coins. Ethereum has no limits on supply, the number of ETH coins issued, which could over the long term result in it being printed ad infinitum, similar to fiat currencies of this day and age.
Its a philosophical and economics armchair debate as to whether ethereum or currencies which can be printed without limit will ever have a real advantage over gold, bitcoin or things defined in terms of having limited supply.
If ethereum is well managed over a period of decades, people may buy into its "trust" based system. It all depends on ethereum's stability and reliability over time. What its reputation is and what people are willing to pay for it.
While it is true, there are many coments from Vitalik and other authority bearing sources that indicate that the issuance rate of Ethereum is going to be severely diminished in proportion to the demand when PoS comes into action.
Also, in theory, there is nothing preventing Bitcoin mining farms to decide to fork and make bitcoin supply non-limited. Please, correct me if I am wrong, but that is technically and theoretically feasible.
Lastly, perpetual deflation is negative for a coin since it becomes unusable for real life transactions as people rather keep it than use it.